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Mathematics, 18.11.2020 01:20 victoriapellam04

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? Check all that apply.
A. -X^2 + 4x + 7 = 2x^2 - 9
B. -3x^2 +9x + 3x^2 = 14 + x - 1
C. 5x + 4 = 3x^2 - 2
D. x^2 + y^2 + x =0

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