Grade 9 · Math
Solve a factored quadratic practice
Use the zero-product property to find both roots.
Opening your practice adventure…
Try a sample
Solve (x − 5)(x − 8) = 0. Which pair lists both solutions?
- -5 and -8
- -5 and 8
- 5 and 8
- 5 and -8
See the answer & why
5 and 8
A product is zero when a factor is zero. x − 5 = 0 or x − 8 = 0, giving 5 and 8.
A little hint: Set each factor equal to zero.
A teaching tip
If a product is zero, at least one factor equals zero.