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Simplifying x2 + -6.2x + 91 = 0 Reorder the terms: 91 + -6.2x + x2 = 0 Solving 91 + -6.2x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-91' to each side of the equation. 91 + -6.2x + -91 + x2 = 0 + -91 Reorder the terms: 91 + -91 + -6.2x + x2 = 0 + -91 Combine like terms: 91 + -91 = 0 0 + -6.2x + x2 = 0 + -91 -6.2x + x2 = 0 + -91 Combine like terms: 0 + -91 = -91 -6.2x + x2 = -91 The x term is -6.2x. Take half its coefficient (-3.1). Square it (9.61) and add it to both sides. Add '9.61' to each side of the equation. -6.2x + 9.61 + x2 = -91 + 9.61 Reorder the terms: 9.61 + -6.2x + x2 = -91 + 9.61 Combine like terms: -91 + 9.61 = -81.39 9.61 + -6.2x + x2 = -81.39 Factor a perfect square on the left side: (x + -3.1)(x + -3.1) = -81.39 Can't calculate square root of the right side. The solution to this equation could not be determined.
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