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OpenStudy (pgxgirl103):
what is the factored form of this expression? 3x^2+15x+1
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OpenStudy (mertsj):
It is prime.
OpenStudy (pgxgirl103):
I just want someone to work me through it so I can understand it.
OpenStudy (pgxgirl103):
@Mertsj
OpenStudy (mertsj):
The way to factor is to learn to relate the roots of the equation to the factors.
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OpenStudy (mertsj):
If 2 is a root then x-2 is a factor. If -2 is a root then x+2 is a factor.
OpenStudy (mertsj):
So you plug the equation into the quadratic formula and find the roots. Then the factors are (x-first root)(x-second root)
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