Quadratic Equations Test

Result

Quadratic Equations Test - 10

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Weekly Quiz Competition

Question 1
1 / -0

_______ is called the Discriminant of the quadratic equation ax² + bx + c = 0.

A
c² − 4ab

B
a²− 4bc

C
None of these

D
b² − 4ac

Solution

Discriminant of the quadratic equation ax²+ bx + c = 0 is D = b² − 4ac.
Question 2
1 / -0

A quadratic equation ax² + bx + c = 0 has coincident roots, if

A
b² − 4ac = 0

B
b²− ac = 0

C
b² − 4ac < 0

D
b² − 4ac > 0

Solution

The roots of the quadratic equation ax² + bx + c = 0, In this formula the term b²- 4ac is called the discriminant. If b² - 4ac = 0, so the equation has a single repeated root. If b² - 4ac > 0, the equation has two real roots. If b²-4ac < 0, the equation has two complex roots.