Question

If a - b = -8 and ab =-12 then a power 3 - b power 3 =

Answer 1

Answer:

a-b= -8

ab = -12

a³-b³=??

since , (a-b)³=a³-3ab(a-b)-b³

=> a³-b³=(a-b)³+3ab(a-b)

=(-8)³+3(-12)(-8)

= -512+3(96)

= -512+288= - 224