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OpenStudy (anonymous):
2x^2-3x+9 simplify
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OpenStudy (anonymous):
x = -7
Directrix (directrix):
2 (-7) ^2 -3 (-7) +9 = ---> post your answer and I or someone will check.
Directrix (directrix):
128
OpenStudy (anonymous):
x(2x-3)+9
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OpenStudy (anonymous):
128
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