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OpenStudy (anonymous):
Use the quadratic formula to solve the equation. x^2+7x-80=0
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OpenStudy (anonymous):
OpenStudy (anonymous):
Here is a song to remember the quadratic formula: pop goes the weasel. Hum the tune or sing it. x equals negative b, plus or minus square root, b squared minus fo-ur a c; All over 2 a! ("all over 2 a!" is "pop goes the weasel!")
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