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OpenStudy (anonymous):
Which equation is NOT a quadratic equation? y = x2 + 4 y = x2 - 8x y = 3x - 9 y = 3x2
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OpenStudy (kropot72):
A quadratic equation is an equation which can be written in the form \[ax ^{2}+bx+c=0\]
OpenStudy (anonymous):
the answer is y = 3x-9 there's no square
OpenStudy (anonymous):
uhh so is it y=3x2
OpenStudy (anonymous):
ok thank you
OpenStudy (anonymous):
@rasta420 welcome
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