Question

Expansion only need the last answer​

Answer 1

Answer:

a^2+b^2-2ab =36

a^2+b^2=36+24

=60

a+b=√60

7.74

Answer 2

Answer:

Step-by-step explanation:

A = 6+B

AB = 6+B(B)

= 6B + B2 = 12

=B2 +