SOLUTION: Hello,
I'm doing my homework right now on Polynomial functions, and I'm stuck on one problem that we didn't cover in class. So if you could help me out, that would be excellent.
Algebra ->
Polynomials-and-rational-expressions
-> SOLUTION: Hello,
I'm doing my homework right now on Polynomial functions, and I'm stuck on one problem that we didn't cover in class. So if you could help me out, that would be excellent.
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Question 360124: Hello,
I'm doing my homework right now on Polynomial functions, and I'm stuck on one problem that we didn't cover in class. So if you could help me out, that would be excellent. Thanks in advance!
Find the x-intercepts of the polynomial f(x)=x^3+2x^2-8x
A)4, -2
B)0, 2, and -4
C)-2, 0, and 4
D)-4 and 2 Answer by ewatrrr(24785) (Show Source):
Hi,
f(x)=x^3+2x^2-8x
f(x)= x(x^2 +2x -8)
f(x)= x(x -2)(x +4)
x intercepts are the value of x where f(x) = 0
x(x -2)(x +4)= 0
x = 0
x = 2
x =-4
Answer B would be the correct choice
