Solving a Quadratic and a Related Equation

Solving a Quadratic and a Related Equation

Secondary 2

Solve the equation \({{x}^{2}}-2x-15=0\).
Hence, find the solutions for the equation \({{\left( y+2 \right)}^{2}}-2\left( y+2 \right)-15=0\).

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Answer:(a) \(x=5\) or \(x=-3\) (b) \(y=3\) or \(y=-5\)

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