If a + b = 2 and ab = 3, then find a^3 + b^3.
OK....watch carefully :
(a+b)3 = 23
a3 + b3 + 3 a2b + 3 ab2 = 8
a3 + b3 + 3ab ( a + b) = 8 now, you are given values for ab and (a+b) <======sub those in and solve for a3 +b3