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OpenStudy (anonymous):
simplify x^2-4x-21/x^27x+12
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Directrix (directrix):
@severalgoats Is this denominator written correctly: x^27x+12 Maybe it is x^2 + 7x + 12 or maybe x*2 - 7x + 12 ? Or, something else.
OpenStudy (anonymous):
@Directrix yeah sorry the question looks like \[x^2-4x-21 \over x^2+7x+12\]
Directrix (directrix):
We need o factor the numerator and the denominator as a beginning step.
Directrix (directrix):
|dw:1418754500195:dw|
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