tindall19
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(2+3x)^5-(2-3x)^5

Is it as simple as working them out individually then just seeing what cancels out?
I've had about 6 people each tell me different answers... but id have thought work them out individually then subtract the answers
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davros
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Report 1 month ago
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(Original post by tindall19)
(2+3x)^5-(2-3x)^5

Is it as simple as working them out individually then just seeing what cancels out?
I've had about 6 people each tell me different answers... but id have thought work them out individually then subtract the answers
Pretty much. You can notice that the constant terms and terms in x^2 and x^4 will cancel out, whereas the terms in x, x^3 and x^5 will be equal but of opposite sign, so just work them out from the 1st bracket and double them.
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