If the discriminating of a quadratic equation is equal to -8, which statement describes the roots?
a. there are two complex roots
b. there are two real roots
c. there is one real root
d. there is one complex root

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.