Find the roots of quadratic equation: x2 + x - 42 = 0?

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Find the roots of quadratic equation: x2 + x - 42 = 0?

Answer: Option D

x² + 7x - 6x + 42 = 0
x(x + 7) - 6(x + 7) = 0
(x + 7)(x - 6) = 0 => x = -7, 6

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