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Mathematics 18 Online
OpenStudy (anonymous):

Simplify: b^2/4a - c/a

OpenStudy (dumbcow):

multiply 2nd fraction by 4 so they have common denominators

OpenStudy (anonymous):

Okay. That is 4a/4c? And I got 4a - b^2/4a

OpenStudy (dumbcow):

almost b^2/4a - 4c/4a = (b^2-4c)/4a

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