exam Maths Puzzle Numerical Ability

PLEASE HELP SOLVE:

(3PQ)Q^2 / 6P^2 Q^4

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exam Other Question

Factor the following polynomials:

4y^2+16y+16

I came up with this:(2y^2)+2y*8+4^2=(y+4)(y+4)

Also this polynomial:

x^2-25/x+5

It reads x squared -25 over x+5

This 2(x-3)-3(x+5)=3(x-2)-7