Question

(3a+2b)² Solve with identity

Answer 1

Answer:

Using the identity is (x−y)

2

=x

2

+y

2

−2xy.

Given: (3a−2b)

2

we apply the above identity by taking

x=3a and y=−2b

We get, (3a−2b)

2

=(3a)

2

+(2b)

2

−(2×3a×2b)=9a

2

+4b

2

−12ab

Hence, (3a−2b)

2

=9a

2

−12ab+4b

2

.

Answer 2

Answer:

26a³+8b³+36ab²+54a²b