Question

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

Answer 1

$(2x+ y)^2\\\\=(2x)^2 +2(2x) \cdot y + y^2\\\\=4x^2+4xy +y^2$

Answer 2

Answer:

Using the identity- (a+b)²=a²+2ab+b²

(2x+y)²=(2x)²+2×2x×y+y²

(2x+y)²=4x²+4xy+y²