exam Maths Puzzle Numerical Ability

Subtract.

4x-2x squared +4x to the 3rd power FROM
4x to the 3rd power + x - 3x squared

I have no clue how to complete this problem. Can you please help me? Thank You!!

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exam Other Question

Solve by completing the square:

w(6w+5)=4
For each of the following, find the vertex by completing the square:
a) y=-3x^2-6x+4
b) y=4x^2-12x-2
c) y=1/3x^2+2x-1
CAn someone please help me ??