Question

x + 3 is a factor of x3 - 4x2 - 18x + 9

True
False

Answer 1

test it by inserting x =-3 in the expression\[x^{3}-4x^{2}-18x+9\]

Answer 2

so substitute -3 into the equation and then mult.

Answer 3

find out if it gives you zero

Answer 4

im confused..

am I supposed to do this

3^-3-4(3)^2-18(3)+9

Answer 5

(-3)^3-4(3)^2-18(3)+9

Answer 6

Its false