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Mathematics 8 Online
OpenStudy (anonymous):

Im solving inequality x^2+3x-4<0, and i need to put it on a graph. I know that the answer is -4

OpenStudy (anonymous):

pretty sure that is not the answer

OpenStudy (anonymous):

ok, im wrong, -4<x<1

OpenStudy (anonymous):

\[x^2+3x-4=(x+4)(x-1)\] zeros are at \(-4\) and \(1\) and since this is a parabola that opens up, it is negative between the zeros and positive outside them, so \[x^2+3x-4<0\] on the interval \((-4,1)\)

OpenStudy (anonymous):

thank you! finally done with my assignment o.O

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