Medium
Determine the nature of the roots of 1x² + (-1)x + (-4) = 0 using the discriminant.
Explanation
Explanation
The discriminant is D = b² - 4ac = (-1)² - 4(1)(-4) = 1 - -16 = 17. Since D > 0, the equation has two distinct real roots.
PRO TIP
Re-check your working by substituting the answer back into the original question.