Hard
Find the roots of the quadratic equation x² + (2)x + (0) = 0.
Explanation
Explanation
We need two numbers whose sum is -2 and product is 0 (since for x² + bx + c, sum of roots = -b, product = c). Those numbers are -2 and 0, so the equation factors as (x - (-2))(x - (0)) = 0, giving x = -2 or x = 0.
PRO TIP
Re-check your working by substituting the answer back into the original question.