Question

a
$(5b + 6) {}^{2}$
​

Answer 1

Answer:

25b²+60a+36.

hope it helps you.....✌✌

Answer 2

Answer:

hi

Step-by-step explanation:

use identities (a+b)² =a²+b²+2ab

so,

(5b+6)²= (5b)²+6²+2×5b×6

= 25b²+36+60b

=25b²+60b+36 ans.