Math Practice Topic: Quadratic Formula

Description: Solve quadratic equations that equal zero using the quadratic formula.

Adaptive Learning Progression: At higher levels, factoring is nearly impossible, so the quadratic formula must be used.

Sample Levels (out of 6)

Solve using the quadratic formula   x = (-b ± √b2 - 4ac) / 2a,   separating answers with commas. If there is no solution, write "no solution".

1.
-x 2 - x + 12 = 0
x =

Solve using the quadratic formula   x = (-b ± √b2 - 4ac) / 2a,   separating answers with commas. If there is no solution, write "no solution".

1.
- 2x 2 - 7x - 3 = 0
x =
2.
- 2x 2 + 10x - 5 = 0
x =
3.
-x 2 - 7x + 4 = 0
x =
4.
- 3x 2 - 10x - 1 = 0
x =

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