Question

-5x^3+7x^2-3x-2
x=-1

Answer 1

x=-15

Answer 2

after i do all the substitutions and steps im lost

Answer 3

well -125+49-3x-2x=-1
then 76-5x = -1
-5x = 75
divide and get x =-15

Answer 4

oops 76 should be negative up there

Answer 5

-5(-1)^3+7(-1)^2-3(-1)-2
thats how i started out with mine.

Answer 6

ohhh did you mean x in the equation = -1

Answer 7

yea x mean -1

Answer 8

after this step im lost. i know i use order of operations but the example they give me i dont get either lol

Answer 9

-5(-1)+7(1)-3(-1)-2=5+7+3-2=13