Question

if a upon b is equals to 2 upon3find value of a cube +b cube

Answer 1

a/b=2/3

Therefore, a=2 and b=3

a^3+b^3=?

Using identity a^3+b^3=(a+b)(a^2+b^2-ab)

(2+3)(2^2+3^2-(2x3))

5(4+9-6)

5(13-6)

=> 5(7)

= 35