First do the graph in your calculator, so you start your work already having a pretty good idea of where the zeroes are.

Then applythe Rational Roots Testto obtain a list ofpossiblewhole-number and fractions zeroes. You should get:

. . . . .

Since whole numbers are easier, start trying whole-number solutions, such as -1 and +4, bysynthetic division.

Once you've found one zero, you can plug the remaining quadratic intothe Quadratic Formulato complete the solution.

If you get stuck, please reply showing all of your steps so far. Thank you!