Question

Expand (2x − 3y) sq.

Answer 1

Answer:

(2x+3y)²

As we know (a+b)²= a²+2ab+b²

now,

a = 2x

b = 3y

substitute the values in the given formula,

=>(2x+3y)²

=> (2x)²+2×(2x)×(3y)+ (3y)²

=> 4x²+12xy+9y²

Answer 2

Answer:

$(2x){2} + 2 \times 2x \times 3y + (3y)^{2} \\ 4x^{2} + 12xy + 9y }^{2}$