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Simplifying 4.9x2 + -10x = -9 Reorder the terms: -10x + 4.9x2 = -9 Solving -10x + 4.9x2 = -9 Solving for variable 'x'. Reorder the terms: 9 + -10x + 4.9x2 = -9 + 9 Combine like terms: -9 + 9 = 0 9 + -10x + 4.9x2 = 0 Begin completing the square. Divide all terms by 4.9 the coefficient of the squared term: Divide each side by '4.9'. 1.836734694 + -2.040816327x + x2 = 0 Move the constant term to the right: Add '-1.836734694' to each side of the equation. 1.836734694 + -2.040816327x + -1.836734694 + x2 = 0 + -1.836734694 Reorder the terms: 1.836734694 + -1.836734694 + -2.040816327x + x2 = 0 + -1.836734694 Combine like terms: 1.836734694 + -1.836734694 = 0.000000000 0.000000000 + -2.040816327x + x2 = 0 + -1.836734694 -2.040816327x + x2 = 0 + -1.836734694 Combine like terms: 0 + -1.836734694 = -1.836734694 -2.040816327x + x2 = -1.836734694 The x term is -2.040816327x. Take half its coefficient (-1.020408164). Square it (1.041232821) and add it to both sides. Add '1.041232821' to each side of the equation. -2.040816327x + 1.041232821 + x2 = -1.836734694 + 1.041232821 Reorder the terms: 1.041232821 + -2.040816327x + x2 = -1.836734694 + 1.041232821 Combine like terms: -1.836734694 + 1.041232821 = -0.795501873 1.041232821 + -2.040816327x + x2 = -0.795501873 Factor a perfect square on the left side: (x + -1.020408164)(x + -1.020408164) = -0.795501873 Can't calculate square root of the right side. The solution to this equation could not be determined.
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