Question

Find the value of a cube + b cube when a+b = 5 and ab = 3

Answer 1

Answer:

babawi lang sana

Step-by-step explanation:

naul pi

Answer 2

As we know :

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

now let's plug the value of given terms :

• (5)³ = a³ + b³ + (3×3)(5)

• 125 = a³ + b³ + 45

• a³ + b³ = 125 - 45

• a³ + b³ = 80