exam Maths Puzzle Numerical Ability

given the following polynomials, perform the indicated operations

p(x)=6x^3 - x^2 + 5x +2

q(x) = 2x^3 + 5x^2-7x-3

determine p(x) + q(x)

determine q(x) - p(x) Thanks!!!!!!

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exam Other Question

I have a Future Value Equation that I need help to do two things. 1) solve for payment and move that to the other side of the equation. 2) solve for # of months and move that varia I've been giving the following problem:

If 2f(x)+f(1-x)=x^2 find f(x)

The answer was given as:

1/3x^2+2/3x-1/3

I need to know how this answer came about. I have two