Question

Factorise each of the following polynomials using (a + b)2 = a2 + 2ab + b2 and (a - b)2 = a2 - 2ab + b2
a) x² + 6xy +9y^2​

Answer 1

Answer:

(x+3y)(x+3y)

Step-by-step explanation:

x² + 6xy +9y² = (x)² + 2*x*3y + (3y)²

Comparing with a²+2ab+b²,

a=x, b=3y

Therefore, answer= (x+3y)² = (x+3y)(x+3y)