Question

If a = 3 and b = -2, what is the value of a2 + 3ab – b2?

Answer 1

Answer:

-2(2)+3(3)(-2)-(-2)(2)

=-4-18+4=-18

Answer 2

Answer:

- 8

Step-by-step explanation:

a=3 b= - 2

a2+3ab- b2

3×(-2)+3×(3×(-2))-(-2)×2

-6+18+4

=- 8