Question

Expand using suitable identity: (a2 + 2b + 3ac)2​

Answer 1

Answer:

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

.

Step-by-step explanation:

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