Question

If a-b = -8 and ab= -12, then a*3-b*3 is equal to

Answer 1

Answer:

a^3 - b^3

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

= (-8)^3 + 3(-12)(-8)

= -512 +288

= -224

so the answer is -224

i hope it's helpful