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Which of the following is not a quadratic equation? A. a=ax^2+bx=0 B. 3x^2=-4x-1 C. x^2=5 D. x^2+3x-2=x^2-2x
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Which of the following is not a quadratic equation? A. a=ax^2+bx=0 B. 3x^2=-4x-1 C. x^2=5 D. x^2+3x-2=x^2-2x

User Ben Botvinick
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Letter D would not be a quadratic.
x^2 + 3x - 2 = x^2 - 2x once simplified becomes
5x - 2 = 0 this is linear.
User Rafael Bugajewski
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