Question

using proper identity , the expansion of (3+5 c ) (3+5 c ) is​

Answer 1

Explaination:

(3+5 c ) (3+5 c )

expand it

3×3+3×5c+5c×3+5c×5c

9+15c+15c + 25c²

the underline number is same term

can be sum

9+30c+25c²

arrange it

25c²+30c+9

anwser:

25c²+30c+9