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Solve for `x.` `x^3+5x^2+6x = 0.`
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High School Teacher
First, we factor out the `x` to get
If we can find two numbers that multiply to `6` and add to `5` , we can factor further. Since `3*2=6` and `3+2=5,` this means that
By the Zero Product Property (see the link for details), this equals zero when `x=0, x=-3,` and `x=-2.` Thus, the three solutions are
Posted by degeneratecircle on March 7, 2013 at 4:10 AM (Answer #1)
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