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OpenStudy (anonymous):
solve and graph (x-1)(x+2) <0
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OpenStudy (rajee_sam):
you know these are factors of a quadratic function. Graph the quadratic function with the zeros at 1 and -2 first. Locate the vertex and look for the portion of the graph for which the y value is < 0 write the interval of the domain for which the function is <0. That's your answer
OpenStudy (anonymous):
could you please help me visually? is it supposed to be a number line?
OpenStudy (rajee_sam):
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