Question 97977
Factoring:
{{{(x^3-81x)}}}=0
{{{((x)(x^2-81))}}}=0
(x)(x+9)(x-9)=0
.
To find the x-intercepts, set each factor equal to zero and solve for the x-term:
x=0
.
x-9=0
x=9
.
x+9=0
x=-9