book Maths Puzzle Numerical Ability

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

Read Solution (Total 0)

book Other Question

solve triangle ABC using the given info...

B=82 deg, a=3, c=7
Does anyone know how to simplify this problem?``

(3x-2)(x-4)-(x-4)(6-5x)/(4-x)(8x-1)