book Maths Puzzle Numerical Ability

Solve by completing the square.

4x^2+2x-3=0

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book Other Question

15 JAN 2015 Quadratic Equation x (x^2+6x+18)(x+6) = 159919
then (x+4)^4 will be (+36)divided by (-6)=(the possibilites are..........-6, 6, 30, or -30)