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Maths Puzzle
Numerical Ability
x^-6x+9=0
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Instructions: For questions 30 and 31 use quadrilateral DEFG inscribed in the circle. If m < GFE = 2x, m < FGD = 2x-12 and m < EDG = 2x + 20 find each measure.
Problems: 1. m < GF
Solve pair of simultaneous equations:
2x^2 - 3y^2 = 5xy 2
-3x + y = 5