Question

using suitable identity, evaluate
(2y+5)(2y+5)​

Answer 1

4y^2 + 20y + 25

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

=(2y+5)(2y+5)

=(2y)²+2×2y×5+(5)²

=(2y+5)²

Identity used:

=>(a+b)²=a²+2ab+b²