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BlossomSerena
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#1
How does rationalising
(the square root of) 2 - (square root of)3 / (square root of) 2 - (square root of) 3 equal -1?
Shouldnt ir at least equal 1?
Can you please show me how this is done.?
P.s sorry if you don't understand what I mean, I can type, or copy and paste square root signs.
(the square root of) 2 - (square root of)3 / (square root of) 2 - (square root of) 3 equal -1?
Shouldnt ir at least equal 1?
Can you please show me how this is done.?
P.s sorry if you don't understand what I mean, I can type, or copy and paste square root signs.
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looktoyourright
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#2
You 100% it's -1 ? If it's from a book then there is a chance it might be wrong. 
I tired it and it only gave me 1
I tired it and it only gave me 1
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Kozmo
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#3
chocolate_ee
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#4
Can anyone help with this ? Trying to self teach myself A level maths -
How does the sq root of 17 minus sq root of 11 all divided by sq root of 17 PLUS the sq root of 11 = 14 minus sq root of 187 all over 3 ??
I'm rationalising the denominator by multiplying by sq root of 17 minus sq root of 11 over the same but I can't understand how you don't get minus 2 x sq root of 11 a 17 on the top line ?
How does the sq root of 17 minus sq root of 11 all divided by sq root of 17 PLUS the sq root of 11 = 14 minus sq root of 187 all over 3 ??
I'm rationalising the denominator by multiplying by sq root of 17 minus sq root of 11 over the same but I can't understand how you don't get minus 2 x sq root of 11 a 17 on the top line ?
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chocolate_ee
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#5
(Original post by chocolate_ee)
Can anyone help with this ? Trying to self teach myself A level maths -
How does the sq root of 17 minus sq root of 11 all divided by sq root of 17 PLUS the sq root of 11 = 14 minus sq root of 187 all over 3 ??
I'm rationalising the denominator by multiplying by sq root of 17 minus sq root of 11 over the same but I can't understand how you don't get minus 2 x sq root of 11 a 17 on the top line ?
Can anyone help with this ? Trying to self teach myself A level maths -
How does the sq root of 17 minus sq root of 11 all divided by sq root of 17 PLUS the sq root of 11 = 14 minus sq root of 187 all over 3 ??
I'm rationalising the denominator by multiplying by sq root of 17 minus sq root of 11 over the same but I can't understand how you don't get minus 2 x sq root of 11 a 17 on the top line ?
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chocolate_ee
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#6
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