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Mathematics 16 Online
OpenStudy (anonymous):

please please help

OpenStudy (anonymous):

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? a; 2x^2-6x-7=2x^2 b; 5x^3-3x+10=2x^2 c; 2x^2-3x+10=2x+21 d; 5x^2+2x-4=2x^2

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