Question

If a+b=8and ab=15then a cube +bcube

Answer 1

The answer is a³+b³=872

Answer 2

Heyaaa!!!

Here's ur answer:-

We know that :-

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

${8}^{3} = {a}^{3} + {b}^{3} + 3 \times 15(8)$

$512 = {a}^{3} + {b}^{3} + 360$

$512 - 360 = {a}^{3} + {b}^{3}$

$152 = {a}^{3} + {b}^{3}$

Hope it helps u!!!