Question

if a-b= -2 and a^3-b^3= -26 find ab​

Answer 1

Answer:

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

-26=-8+ 3ab× -2

-26=-8-6ab

-6ab = -26+8

-6ab= -18

6ab=18

ab=3