12. What is the standard form of this quadratic equation 2x2 -3 7x? a. 2x2 -3 = 7x b. 2x2 3-7x 0 d. -2x2 3+ 7x = 0 www | c. 2x2 - 7x - 3 13. Which of the following equation is not a quadratic equation? a. 3x? + 4x - 7 0 c. 2x2 +x- 6=0 14. Which of the following equation is a quadratic equation? a. 4x-2 - 6x + 6 = 0 c. 5x3 + 5x -7 = 0 %3D b. x2 -5x 8 8 d. 0x2 - 2x-9 =0 b. 3x? -8y = 1 d. 3x? +9 = 7

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