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OpenStudy (anonymous):
Which equation is a quadratic equation? A. x^2+4x+5=x^2+5x+4 B. 5x+4/x=x+4 C. 2x^3+4x+5=5x+4 D. 4x^2+x^4+5=0
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OpenStudy (anonymous):
D
OpenStudy (anonymous):
so a or d?
OpenStudy (anonymous):
D since A will just end up having no x^2
OpenStudy (anonymous):
d
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