Question

solve using identities 5 (2a – 7) (2a – 7 )​

Answer 1

Answer:

(2a−7)(2a−7)=(2a−7)

2

using identity (a−b)

2

=a

2

−2ab+b

2

(2a−7)

2

=(2a)

2

−2×2a×7+7

2

(2a−7)

2

=4a

2

−28a+49