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Simplifying 10x2 + -7x = -5 Reorder the terms: -7x + 10x2 = -5 Solving -7x + 10x2 = -5 Solving for variable 'x'. Reorder the terms: 5 + -7x + 10x2 = -5 + 5 Combine like terms: -5 + 5 = 0 5 + -7x + 10x2 = 0 Begin completing the square. Divide all terms by 10 the coefficient of the squared term: Divide each side by '10'. 0.5 + -0.7x + x2 = 0 Move the constant term to the right: Add '-0.5' to each side of the equation. 0.5 + -0.7x + -0.5 + x2 = 0 + -0.5 Reorder the terms: 0.5 + -0.5 + -0.7x + x2 = 0 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + -0.7x + x2 = 0 + -0.5 -0.7x + x2 = 0 + -0.5 Combine like terms: 0 + -0.5 = -0.5 -0.7x + x2 = -0.5 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 = -0.5 + 0.1225 Reorder the terms: 0.1225 + -0.7x + x2 = -0.5 + 0.1225 Combine like terms: -0.5 + 0.1225 = -0.3775 0.1225 + -0.7x + x2 = -0.3775 Factor a perfect square on the left side: (x + -0.35)(x + -0.35) = -0.3775 Can't calculate square root of the right side. The solution to this equation could not be determined.
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