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Simplifying (10x2 + 9x + 5) = 0 Reorder the terms: (5 + 9x + 10x2) = 0 Remove parenthesis around (5 + 9x + 10x2) 5 + 9x + 10x2 = 0 Solving 5 + 9x + 10x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 10 the coefficient of the squared term: Divide each side by '10'. 0.5 + 0.9x + x2 = 0 Move the constant term to the right: Add '-0.5' to each side of the equation. 0.5 + 0.9x + -0.5 + x2 = 0 + -0.5 Reorder the terms: 0.5 + -0.5 + 0.9x + x2 = 0 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + 0.9x + x2 = 0 + -0.5 0.9x + x2 = 0 + -0.5 Combine like terms: 0 + -0.5 = -0.5 0.9x + x2 = -0.5 The x term is 0.9x. Take half its coefficient (0.45). Square it (0.2025) and add it to both sides. Add '0.2025' to each side of the equation. 0.9x + 0.2025 + x2 = -0.5 + 0.2025 Reorder the terms: 0.2025 + 0.9x + x2 = -0.5 + 0.2025 Combine like terms: -0.5 + 0.2025 = -0.2975 0.2025 + 0.9x + x2 = -0.2975 Factor a perfect square on the left side: (x + 0.45)(x + 0.45) = -0.2975 Can't calculate square root of the right side. The solution to this equation could not be determined.
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