Which of the following is a standard form of quadratic equation?, ax2 + bx  + c = 0, ax2 + bx = c, ax2 = bx + c, x2a + xb + c = 0, What are the roots in the quadratic equation x2 + 2x + 1 = 0, 1, -1, 2, -2, What is b in the quadratic equation x2 + 8x + 12 = 0 ?, -8, 12, 8, -12, What is c in the x2 - 5x - 14 = 0 ?, 5, 14, -5, -14, What is a, b, and c in the given quadratic equation 4x2 - 2x - 15 = 0 ?, -4, -2, -15, 4, 2, 15, -4, -2, 15, 4, -2, -15.

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