Question

If ab = 5 and a-b = 2, then find the value of a cube – b cube

Answer 1

Answer:

Difference between two numbers is 3 and product is 4

There is only one pair. 4 and 1

4–1=3 and 4×1=4

Therefore

a=4,b=1

Therefore

a^3-b^3=(4)^3-(1)^3=64–1=63