book Maths Puzzle Numerical Ability

Please Help me Factor X^2-5X+8^-2=2^-2

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book Other Question

If you know the height and area of a trapezoid can you find the lengths of its bases? You have a triangle 6 1/4 high, 24 long, and Hyp of 24.8. one known angle of 90 degrees, what are the other two angles?