Question

(x×7)^2 use identities​

Answer 1

Answer:

(x×7)².

(a×b)²=a²×b²×(a×b)².

(x×7)²=(x)²×(7)²×(x×7)².

=x²×49×(x²×49).

=x⁴×49².

=x⁴×2401.

I think this is your answer.