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Simplifying 10x2 + -7x + 10 = 0 Reorder the terms: 10 + -7x + 10x2 = 0 Solving 10 + -7x + 10x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 10 the coefficient of the squared term: Divide each side by '10'. 1 + -0.7x + x2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + -0.7x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -0.7x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -0.7x + x2 = 0 + -1 -0.7x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -0.7x + x2 = -1 The x term is -0.7x. Take half its coefficient (-0.35). Square it (0.1225) and add it to both sides. Add '0.1225' to each side of the equation. -0.7x + 0.1225 + x2 = -1 + 0.1225 Reorder the terms: 0.1225 + -0.7x + x2 = -1 + 0.1225 Combine like terms: -1 + 0.1225 = -0.8775 0.1225 + -0.7x + x2 = -0.8775 Factor a perfect square on the left side: (x + -0.35)(x + -0.35) = -0.8775 Can't calculate square root of the right side. The solution to this equation could not be determined.
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