Question

How do you evaluate `a^4 – b^2` if a = 3 and b = 9?

Answer 1

`a^4-b^2=0`

Explanation:

`Given,`

`a=3,b=9`

`Then,a^4=3*3*3*3=81`

`b^2=9*9=81`

`So,81-81=0`