Question

21. Simplify:

( 7c – 8d)2

+ ( 7c + 8d )2​

Answer 1

$\rm{\green{\underline{\underline{\orange{Answer :-}}}}}$

Simplify

Let's simplify step-by-step.

(7c−8d)(2)+(7c+8d)(2)

Distribute:

=(7c)(2)+(−8d)(2)+(7c)(2)+(8d)(2)

=14c+−16d+14c+16d

Combine Like Terms:

=14c+−16d+14c+16d

=(14c+14c)+(−16d+16d)

=28c

Answer:

=28c

Answer 2

Answer:

28c

Step-by-step explanation

14c - 16 d + 14 c + 16 d

14c + 14 c - 16d + 16d

28c