What is the value of 'a' in the equation 2x2+3x-1=0 ?, -1, 3, 2, 0, What is the value of 'c' in the equation -x2+7x+3=0 ?, 0, 3, 7, -1, What is the coefficient of 'x' in the equation x2-9=0?, 9, -9, 1, 0, Determine the value of 'b' in the given equation: -2x2+x-1=0, 1, -1, -2, 2

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