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OpenStudy (anonymous):
1. Which of the equations below represents a Quadratic Equation? A. 8x + 12 = 24 B. x + 9 = 7x - 15 C. 2x^2+5x-8=21 D. x^3+4x=16
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OpenStudy (anonymous):
The correct answer is C. For more information: http://en.wikipedia.org/wiki/Quadratic_equation
OpenStudy (anonymous):
If x^3 is the highest power in the equation, it's called cubic. If x^2 is the highest power in the equation, it's called quadratic. If x is the highest power in the equation, it's called linear
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