book Maths Puzzle Numerical Ability

I NEED HELP SOLVING THIS:
(4X + 3W^2)(4X - 3X^2)

Read Solution (Total 0)

book Other Question

Simplify (3rd sqrt 9/8x)^-6 If N(t)=N(0)a^pi^t

How would you determine:
1) N(0)
2) pi

Thanks