Question

if a-b= -8 and ab= -12 then evaluate a³-b³​

Answer 1

Answer:

the answer is maybe -2 the power is 3. is it correct?

Answer 2

Answer:

-224

Solution:

we can write a³-b³ as (a-b)³+3ab(a-b)

hence putting the values we get

a³-b³=(-8)³+3(-12)(-8)

a³-b³=-512+288

a³-b³=-224