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OpenStudy (anonymous):
Which of the following is a quadratic function? A. y= x^2-50 B. y= x^3-40x C. y= x^4+18x D. y= x-81
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OpenStudy (anonymous):
a is the correct answer. A quadratic equation is of degree 2. Answer b is of degree 3 and c is of degree 4 while d is of degree 1. It has to do with the exponents of the terms in the equation.
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