book Maths Puzzle Numerical Ability

To: xcentaur(44)
e.g. Find the solution set.
x^2+ y^2 = 8, and 16x + 4y^2 = 80

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I need to simplify this:

10X+4+X-9 If I have these terms to add, x, c to the third power,x to the 2nd power over m to the third power, c to the third power, x to the second power, PLUS m to the third, x to the seco