exam Maths Puzzle Numerical Ability

Simplify the following.
2x^4 - 2x^2 + 4x - x^4 + 4x^2 - 2x + 5

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exam Other Question

Write the equation of the line which passes through the point (2, 1) and is parallel to the line with equation y = 5/2 x + 6 (that is five over 2 with an x next to the fraction). Factor completely

4x^2+32x+60