A level maths help!!
When simplifying this, why is the first 'term' not simplified to -1/2, assuming that you have to multiply it out?
(edited 1 year ago)
Original post by Idk131
When simplifying this, why is the first 'term' not simplified to -1/2, assuming that you have to multiply it out?
Youre subtracting
1 - 1/2 = 1/2
Original post by mqb2766
Youre subtracting
1 - 1/2 = 1/2
1 - 1/2 = 1/2
But then why are the rest of the terms not subtracted, because should the second term not be 5/4x then?
(edited 1 year ago)
Original post by Idk131
But then why are the rest of the terms not subtracted, because should the second term not be 5/4x then?
Its
1 + (-1)*(....)
so the sign of each term in (...) is flipped
Original post by mqb2766
Its
1 + (-1)*(....)
so the sign of each term in (...) is flipped
1 + (-1)*(....)
so the sign of each term in (...) is flipped
But 1+(-1)*(-1/4x)= 5/4x not 1/4x which is the answer. Could you please explain? It seems as though they don't add the 1 onto the answer
(edited 1 year ago)
Original post by Idk131
But 1+(-1)*(-1/4x)= 5/4x not 1/4x which is the answer. Could you please explain?
Multiply each term in (...) by -1 (so flip the sign) then add 1.
1 - 1/2 + x/4 ....
is
1/2 + x/4 ....
you should know this.
(edited 1 year ago)
Original post by mqb2766
Multiply each term in (...) by -1 (so flip the sign) then add 1.
1 - 1/2 + x/4 ....
is
1/2 + x/4 ....
you should know this.
1 - 1/2 + x/4 ....
is
1/2 + x/4 ....
you should know this.
Oh of course, I see now, thanks!! that was such a stupid moment for me lol
(edited 1 year ago)
Original post by Idk131
When simplifying this, why is the first 'term' not simplified to -1/2, assuming that you have to multiply it out?
1 - 1/2 = 1/2
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