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Simplifying 12x2 + -21x + 49 = 0 Reorder the terms: 49 + -21x + 12x2 = 0 Solving 49 + -21x + 12x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 12 the coefficient of the squared term: Divide each side by '12'. 4.083333333 + -1.75x + x2 = 0 Move the constant term to the right: Add '-4.083333333' to each side of the equation. 4.083333333 + -1.75x + -4.083333333 + x2 = 0 + -4.083333333 Reorder the terms: 4.083333333 + -4.083333333 + -1.75x + x2 = 0 + -4.083333333 Combine like terms: 4.083333333 + -4.083333333 = 0.000000000 0.000000000 + -1.75x + x2 = 0 + -4.083333333 -1.75x + x2 = 0 + -4.083333333 Combine like terms: 0 + -4.083333333 = -4.083333333 -1.75x + x2 = -4.083333333 The x term is -1.75x. Take half its coefficient (-0.875). Square it (0.765625) and add it to both sides. Add '0.765625' to each side of the equation. -1.75x + 0.765625 + x2 = -4.083333333 + 0.765625 Reorder the terms: 0.765625 + -1.75x + x2 = -4.083333333 + 0.765625 Combine like terms: -4.083333333 + 0.765625 = -3.317708333 0.765625 + -1.75x + x2 = -3.317708333 Factor a perfect square on the left side: (x + -0.875)(x + -0.875) = -3.317708333 Can't calculate square root of the right side. The solution to this equation could not be determined.
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