Question

if (a+b)=4 and ab=-2 find a3+b3​

Answer 1

Step-by-step explanation:

Here given

a+b = 4 and ab = -2

We Know,

$(a³ + b³) = (a + b)³ – 3ab(a + b)$

= (4)^3 -3(-2)×4

= 88