Help on a maths question
Hi guys, it would be great if you guys could help me answer this question.
thanks.
thanks.
(edited 9 years ago)
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Original post by Chittesh14
Hi guys, it would be great if you guys could help me answer this question.
thanks.
thanks.
Attachment not found
I am sure somebody will help you but your attachment is invalid
Original post by TeeEm
I am sure somebody will help you but your attachment is invalid
Sorry bro, don't know what the problem was, still works fine for me. But re-uploaded onto this post.
Original post by Chittesh14
Hi guys, it would be great if you guys could help me answer this question.
thanks.
thanks.
That's not a question - that's just an expression!
Are you being asked to simplify what's written? There are several ways of going about this - one way is to start by writing what's inside the brackets as a power of some fraction. Can you do that?
Original post by davros
That's not a question - that's just an expression!
Are you being asked to simplify what's written? There are several ways of going about this - one way is to start by writing what's inside the brackets as a power of some fraction. Can you do that?
Are you being asked to simplify what's written? There are several ways of going about this - one way is to start by writing what's inside the brackets as a power of some fraction. Can you do that?
Yeah, sorry I kept doing it wrong lol. I was doing something else like doing 1/4 to the power of -2 and then writing a after it. But, my brother solved it for me and it is correct. I was meant to simplify it and I got the answer as 16a^4.
Original post by Chittesh14
Yeah, sorry I kept doing it wrong lol. I was doing something else like doing 1/4 to the power of -2 and then writing a after it. But, my brother solved it for me and it is correct. I was meant to simplify it and I got the answer as 16a^4.
Your brother was wrong if you're saying he got
(edited 9 years ago)
Original post by Phichi
Your brother was wrong if you're saying he got
How, that's the correct answer?
Original post by Chittesh14
How, that's the correct answer?
No its not. Rewrite the middle part.
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Original post by Chittesh14
How, that's the correct answer?
It's not the same as what you wrote down in the first post!
Can you give us a screenshot or photo of the original question?
Original post by davros
It's not the same as what you wrote down in the first post!
Can you give us a screenshot or photo of the original question?
Can you give us a screenshot or photo of the original question?
I don't know sorry my friend just needed help on the question and that's all he sent me. Therefore, I just worked out what's in the bracket and then raised it to the power of -3/4 and it face me 16a^4.
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Original post by Chittesh14
I don't know sorry my friend just needed help on the question and that's all he sent me. Therefore, I just worked out what's in the bracket and then raised it to the power of -3/4 and it face me 16a^4.
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But it doesn't give you that
Even if you just consider the fraction (1/4)^-3/4 = 2root2 not 16
Original post by TenOfThem
But it doesn't give you that
Even if you just consider the fraction (1/4)^-3/4 = 2root2 not 16
Even if you just consider the fraction (1/4)^-3/4 = 2root2 not 16
Yeah, can u explain to me how you got there. I don't really know how to solve this question, my brother got something like that before and then he done it again to get 16a4.
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Original post by Chittesh14
Yeah, can u explain to me how you got there. I don't really know how to solve this question, my brother got something like that before and then he done it again to get 16a4.
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Posted from TSR Mobile
The negative power means reciprocal giving 4
The 1/4 power means fourth root giving root2
The 3 power means cube giving 2root2
No sign of 16
Original post by Chittesh14
Yeah, can u explain to me how you got there. I don't really know how to solve this question, my brother got something like that before and then he done it again to get 16a4.
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So u have 1/(1/4)^3/4 yes
Square root to give 1/(1/2)^3/2
Repeat again to give 1/(1/root2)^3
Which will give the answer
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Original post by TenOfThem
The negative power means reciprocal giving 4
The 1/4 power means fourth root giving root2
The 3 power means cube giving 2root2
No sign of 16
The 1/4 power means fourth root giving root2
The 3 power means cube giving 2root2
No sign of 16
Original post by physicsmaths
So u have 1/(1/4)^3/4 yes
Square root to give 1/(1/2)^3/2
Repeat again to give 1/(1/root2)^3
Which will give the answer
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Square root to give 1/(1/2)^3/2
Repeat again to give 1/(1/root2)^3
Which will give the answer
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Oh right thanks guys, that's exactly what my brother done and got the answer 2 root 2. But, what happened to the a? Where does the letter a go.
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Original post by Chittesh14
Oh right thanks guys, that's exactly what my brother done and got the answer 2 root 2. But, what happened to the a? Where does the letter a go.
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Oh yh put that in there a^3/2
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Original post by physicsmaths
So, should the answer be 2 root 2, where is the a? lol.
It's like root 2 multiplied by a and then to the power of 3? is that what your saying.
Original post by Chittesh14
So, should the answer be 2 root 2, where is the a? lol.
It's like root 2 multiplied by a and then to the power of 3? is that what your saying.
It's like root 2 multiplied by a and then to the power of 3? is that what your saying.
Look we have done (1/4)^-3/4
No multiply it by (a^-2)^-3/4
If you use indices you should find that part extremely easy.
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Original post by physicsmaths
Look we have done (1/4)^-3/4
No multiply it by (a^-2)^-3/4
If you use indices you should find that part extremely easy.
Posted from TSR Mobile
No multiply it by (a^-2)^-3/4
If you use indices you should find that part extremely easy.
Posted from TSR Mobile
(a^-2)^-3/4 =
a^-2 = 1/a^2 then
(1/a^2)^-3/4 = 1 / (1/a^2)^3/4 =
(a^2)^3/4 = fourth root of a^2 = square root of a^2 = a, square root of a = root a.
cube root a = a root a?
So the answer should be 2 root 2 and a root a? im confused lol.
Original post by Chittesh14
(a^-2)^-3/4 =
a^-2 = 1/a^2 then
(1/a^2)^-3/4 = 1 / (1/a^2)^3/4 =
(a^2)^3/4 = fourth root of a^2 = square root of a^2 = a, square root of a = root a.
cube root a = a root a?
So the answer should be 2 root 2 and a root a? im confused lol.
a^-2 = 1/a^2 then
(1/a^2)^-3/4 = 1 / (1/a^2)^3/4 =
(a^2)^3/4 = fourth root of a^2 = square root of a^2 = a, square root of a = root a.
cube root a = a root a?
So the answer should be 2 root 2 and a root a? im confused lol.
Yes but u couldve just done -2x-3/4=3/2 so a^3/2 but yh thats aroota.
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