exam Maths Puzzle Numerical Ability

is x+3 a factor of -2x^3+x^2-63?

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exam Other Question

Find the mean.-5, -2, 2, 4, 14, 17 Determine whether the following equations have a solution or not? Justify your answer.
a) 5x2 + 8x + 7 = 0
b) (7)1/2y2 - 6y - 13(7)1/2 = 0
c) 2x2 + x - 1 = 0
d) 4/3x2 - 2x