Default
Question
The roots of the quadratic equation $x^2 - 3x -10 = 0$ are
Solution
The correct answer is 5, -2
Explanation
$x^2 - 3x -10 = 0$
⇒ $x^2 - 5x + 2x -10 = 0$
⇒ $x(x - 5) + 2(x - 5) = 0$
⇒ $ (x − 5)(x + 2)= 0$
⇒ $x = 5, -2$
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