Question

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

Answer 1

Substituting a = 3 and b = -2 into the expression a^2 + 3ab - b^2, we get:

a^2 + 3ab - b^2 = 3^2 + 3(3)(-2) - (-2)^2

a^2 + 3ab - b^2 = 9 - 18 - 4

a^2 + 3ab - b^2 = -13

Therefore, the value of a^2 + 3ab - b^2 when a = 3 and b = -2 is -13.