SOLUTION: x^3-43x-42 how i find the x intercept? please help me

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Question 321566: x^3-43x-42
how i find the x intercept?
please help me
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E3-43x-42=0
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.
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+graph%28+300%2C+300%2C+-8%2C+8%2C+-8%2C+8%2C+x%5E3-43x-42%0D%0A%29+
From graphing, it looks like, x=-6, x=-1, x=7 are all x-intercepts.
Verify using the equation.
Ill do one, you check the other two.
x%5E3-43x-42=%28-1%29%2B43-42=0