what is the answer to -x^3 -2x^1 -8 when x= -3

Question

please help i have my final exam in College Algebra on Wednesday 12/18 and lots of tutoring/help

Comments

Thank u I understood that. That seems pretty easy. I have a whole final exam in this class on Wednesday and I am forgetting how to do some of these problems.

Answer 1

-x^3 -2x^1 -8 when x= -3

replace x by -3

then the expression becomes -(-3)^3 - 2(-3)^1 -8 = -(-27)-2(-3)-8 = 27+6 -8 =25