Question

Using suitable identities , find (5x+2)^2 +(5x-2)^2​

Answer 1

Step-by-step explanation:

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

= {(5x)^2 +2(5x)(2) +(2)^2}+ {(5x)^2 -2(5x)(2) +(2)^2}

= 25x^2 + 20x +4 + 25x^2 - 20x +4

= 25x^2 +8

I hope u understand.

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