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Simplifying x2 + 0.2x + 98 = 0 Reorder the terms: 98 + 0.2x + x2 = 0 Solving 98 + 0.2x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-98' to each side of the equation. 98 + 0.2x + -98 + x2 = 0 + -98 Reorder the terms: 98 + -98 + 0.2x + x2 = 0 + -98 Combine like terms: 98 + -98 = 0 0 + 0.2x + x2 = 0 + -98 0.2x + x2 = 0 + -98 Combine like terms: 0 + -98 = -98 0.2x + x2 = -98 The x term is 0.2x. Take half its coefficient (0.1). Square it (0.01) and add it to both sides. Add '0.01' to each side of the equation. 0.2x + 0.01 + x2 = -98 + 0.01 Reorder the terms: 0.01 + 0.2x + x2 = -98 + 0.01 Combine like terms: -98 + 0.01 = -97.99 0.01 + 0.2x + x2 = -97.99 Factor a perfect square on the left side: (x + 0.1)(x + 0.1) = -97.99 Can't calculate square root of the right side. The solution to this equation could not be determined.
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