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Mathematics 9 Online
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

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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