Question

Find the product of (2x + 5y)2.

Answer 1

Answer:

4x2 + 20xy + 25y2

Step-by-step explanation:

Answer 2

Answer:

correct answer is option A

Step-by-step explanation:

given,

(2 x + 5 y)².................(1)

using identity of

( a + b )² = a² + b² + 2 a b

using identity in equation (1)

(2 x + 5 y)² = (2 x)² + (5 y)² + 2 × (2 x) ×(5 y)

(2 x + 5 y)² =   4 x² + 25 y² + 20 x y

hence on solving the equation by using identity we get

(2 x + 5 y)² =   4 x² + 25 y² + 20 x y

so, the correct answer is option A