Q23 of 83 Page 90

A quadratic equation has two equal roots, if…….

when D = 0, the quadratic equation has equal roots.

(A) doesn’t match the solution.

(B) doesn’t match the solution.

Discriminant D = ….for the quadratic equation 5x² — 6x + 1 = 0

If x = 2 is a root of the equation x² — 4x + a = 0, then a =

The quadratic equation has 3 as one of its roots.

If 4 is a root of quadratic equation x² + ax — 8 = 0, then a =

Questions · 83

4. Quadratic Equations

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