Find all the rational zeros of f(x). Then solve f(x) =0.

F(x) = x^3 -13x+12

f(x) =0 has solutions x=____. Use commas to seperate answers as needed.

Sove the following inequality.

x^3 + 8x^2 - 64x is less than or equal to 512. The solution set is ____. (Type in interval notation.)

Use quadratic formula to find exact solutions.

5x^2 +6x = -9 x=____. (type answer in form a +bi. use a comma to seperate answers as needed.)