# Help Needed in Expnentials + Loagarithms (Related to factorising)Watch

#1
Hi guys....I seriously need help here.

I'm doing C2....Logarithms & Exponentials.

I am at a point where I have a type of

y^2 + x^2 + xy equation

I am not sure how to factorise it.....the equation itself is:

logx^2 - 9(log2)^2 - 8logxlog2

Any help would be greatly appreciated!
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9 years ago
#2
is it log(x^2) or (logx)^2? If it is (logx)^2, then we can write it as:

x^2 - 9y^2 - 8xy, where x = logx, y = log2

which can be factorised as:

(x-9y)(x+y)
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#3
@machodog

thankyou very much!

(x-9y)(x+y) ......give me the right answer!
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