Question

find the following squares by using the identities
(2x+y)^2​

Answer 1

Step-by-step explanation:

Using the identity (a + b)2 = a2 + 2ab + b2 , we have

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

= 4x2y2+ 20x2y2 + 25y2

Answer 2

Answer:

${(2x + y) }^{2} \\ = {(2x)}^{2} + {y}^{2} + 2 \times 2x \times y \\ = 4 {x}^{2} + {y}^{2} + 4xy$