If a + b = 5 and ab = 6, then what is the value of a^{3}+ b^{3}?

- 35
- 40
- 90
- 125

**Answer**

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

= 5^{3} - 3(6)(5)

= 125 - 90

= 35

**The correct option is A.**

If a + b = 5 and ab = 6, then what is the value of a^{3}+ b^{3}?

- 35
- 40
- 90
- 125

**Answer**

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

= 5^{3} - 3(6)(5)

= 125 - 90

= 35

**The correct option is A.**