exam Maths Puzzle Numerical Ability

2
-x-3=4(x-1)
3

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exam Other Question

Factor completely:
16x^2 + 24xy + 9y^2

I am trying to figure this out, but can not remember the steps in order to do so, could someone help me out please? Thank you Hello, I was wondering if anyone could help me with a polynomial function.
It says to find all the real zeros.
f(x)= 2x^4 -2x^2 -40
2(x^4 -x^2 -20) = 0
2(x^2 -5)(x^2 +4) = 0