book Maths Puzzle Numerical Ability

solve a proportion for x. 2x-5/x+2=3x-5/3x-1

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book Other Question

algebraic expression bx^2-cx+a^2=0. Where a, b, and c are caonstants, and x is the unknown. They differ by the sing of the squareroot. Enter the won with teh plus sign. solve by factoring.
1) x2-5x+6=0
2) 2x2-9x-5=0
3) 3x2+5x-2=0