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OpenStudy (anonymous):
Simplify completely quantity 12 x plus 36 over quantity x squared minus 4 x minus 21 and find the restrictions on the variable. need help with the restrictions
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OpenStudy (e.mccormick):
OK, do you know what the concept of estrictions is?
OpenStudy (jim766):
\[\frac{ 12x + 36 }{x^2 +4x-21}\] factor the numerator and then the denominator. denominator of a fraction cant be = to zero
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