Question

if a+b=12 and ab=27 find the value of a^3+b^3

Answer 1

a+b=12
ab=27
(a+b)^3=a^3+b^3+3ab(a+b)
(12)^3=a^3+b^3+3×27 (12)
1728=a^3+b^3+972
a^3+b^3=1728-972
a^3+b^3=756

Answer 2

Hi Friend

The answer is 756.

Hope this will help you.