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Simplifying x2 + 0.21x + 0.035 = 0 Reorder the terms: 0.035 + 0.21x + x2 = 0 Solving 0.035 + 0.21x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-0.035' to each side of the equation. 0.035 + 0.21x + -0.035 + x2 = 0 + -0.035 Reorder the terms: 0.035 + -0.035 + 0.21x + x2 = 0 + -0.035 Combine like terms: 0.035 + -0.035 = 0.000 0.000 + 0.21x + x2 = 0 + -0.035 0.21x + x2 = 0 + -0.035 Combine like terms: 0 + -0.035 = -0.035 0.21x + x2 = -0.035 The x term is 0.21x. Take half its coefficient (0.105). Square it (0.011025) and add it to both sides. Add '0.011025' to each side of the equation. 0.21x + 0.011025 + x2 = -0.035 + 0.011025 Reorder the terms: 0.011025 + 0.21x + x2 = -0.035 + 0.011025 Combine like terms: -0.035 + 0.011025 = -0.023975 0.011025 + 0.21x + x2 = -0.023975 Factor a perfect square on the left side: (x + 0.105)(x + 0.105) = -0.023975 Can't calculate square root of the right side. The solution to this equation could not be determined.
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