Solve the quadratic by factorising and choose the correct solution.
\( \text{Solve the quadratic equation: } x^2 + 4x - 12 = 0 \)
Choose one option:
Multiply to the constant term, sum to the coefficient of x.
Factor: \((x + 6)(x - 2) = 0\) gives roots \(x = -6\) and \(x = 2\).
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