exam Maths Puzzle Numerical Ability

need the number for x for finding a parabola question is y=(x-2)2power hurry please ISBN 9739619228 sorry not sure of number

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exam Other Question

2x^2-5x=3 I am having trouble figuring this out.I am suppose to use the quadratic formula Find the value of "a" in each question below so that the point "M" is the midpoint of the segment joining points "A" and "B"

A(-2,a),B(-6,5),M(-4,5)

Also please send the solution and steps on how to solve this question