Quadratic Equations Quiz

What is the solution of the equation x² = 25?

• 0

• ±5

• 25

• ±25

Solve x² = 49.

• ±49

• 7

• ±7

• 0

Solve x² − 9 = 0.

• ±3

• 9

• 0

• ±9

Factor: x² + 5x + 6.

• (x+2) (x+3)

• (x+1) (x+6)

• (x−2) (x−3)

• (x−1) (x−6)

Solve x² + 7x + 10 = 0 by factoring.

• x = −2 and −5

• x = 2 and 5

• x = −1 and −10

• x = 1 and 10

What is the discriminant of x² + 4x + 4 = 0?

• 0

• 4

• 8

• 16

Solve by completing the square: x² + 6x + 9 = 0

• x = −3

• x = 3

• x = ±3

• x = 0

Use the quadratic formula to solve: x² − 4x + 3 = 0

• x = 1, x = 3

• x = −1, x = −3

• x = 4

• x = 2

What kind of roots does x² + 2x + 1 = 0 have?

• Two distinct real roots

• Two imaginary roots

• One real repeated root

• No root

The equation x² + 3x = 0 factors to:

• x (x + 3)

• (x + 3) ²

• (x − 3) ²

• x (x − 3)