Question

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

Answer 1

Answer:

(2x + 5y )( 2x + 5y)

= (2x + 5y)²

= (2x)² + (5y)² + 2 ×2x × 5y

= 4x² + 25y² + 20xy