Q.) x2 - 7x + 12 = 0
Q.) x2 - 9x + 20 = 0
Q.) x2 - 11x + 30 = 0
Q.) -x2 + 6x + 5 = 0
Q.) -x2 - x + 12 = 0
Q.) x(x - 2) = 2(x + 6)
Q.) x2 + 2x + 1 - 9 = 0
Q.) -2x2 + 3x + 5 = 0
Q.) x2 - 4x - 1845 = 0
Q.) (x - 3)(x + 1) = 5x - 13
Q.) x2 + 5x = -4
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