Question

if a+b = 8 and a² + b² = 40
then find the value of a³ + b³​

Answer 1

a + b= 8

a^2 + b^2 = 40

Now, a^2 + b^2 = (a + b)^2 - 2ab

40 = 82 - 2ab

2ab = 64 - 40 = 24

ab = 12

Therefore, a^3 + b^3 = (a + b)^3 - 3ab(a + b)

= 512- 3 x 12 x 8

= 512 - 288

= 224

Answer 2

Answer:

according to me this is the answer

Step-by-step explanation:

if you like my answer then plz follow