Math, asked by Ayushkumarpaswan, 1 year ago

(2x+5)square 2 identity 1

Answers

Answered by windy100

4x²+25.....................

Answered by angelique7

Answer:

by using identity a^2-b^2=(a-b) (a+b) here a=(2x+5) b=(2x-5) so (2x+5) ^2-(2x-5) ^2=[2x+5-(2x-5) ][2x+5+2x-5] =10×4x =40x. 4.4 ... Ans=x=1/40

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