Question

2. Expand the squares and simplify using (a - b) = a - 2ab-b.
a) (3 - 4xy}²
b) (12-5y)²

Answer 1

Answer:

a)9+16xy-24xy

b)24 + 25- 120y

Step-by-step explanation:

a)3^2 +4xy^2 -2(3×4xy)

9+16xy-24xy

b)12^2 + 5y^2-2(12×5y)