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Simplifying x2 + 0.6x + 9 = 0 Reorder the terms: 9 + 0.6x + x2 = 0 Solving 9 + 0.6x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-9' to each side of the equation. 9 + 0.6x + -9 + x2 = 0 + -9 Reorder the terms: 9 + -9 + 0.6x + x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 0.6x + x2 = 0 + -9 0.6x + x2 = 0 + -9 Combine like terms: 0 + -9 = -9 0.6x + x2 = -9 The x term is 0.6x. Take half its coefficient (0.3). Square it (0.09) and add it to both sides. Add '0.09' to each side of the equation. 0.6x + 0.09 + x2 = -9 + 0.09 Reorder the terms: 0.09 + 0.6x + x2 = -9 + 0.09 Combine like terms: -9 + 0.09 = -8.91 0.09 + 0.6x + x2 = -8.91 Factor a perfect square on the left side: (x + 0.3)(x + 0.3) = -8.91 Can't calculate square root of the right side. The solution to this equation could not be determined.
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