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Simplifying 0.04x2 + -0.8x + 22 = 0 Reorder the terms: 22 + -0.8x + 0.04x2 = 0 Solving 22 + -0.8x + 0.04x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 0.04 the coefficient of the squared term: Divide each side by '0.04'. 550 + -20x + x2 = 0 Move the constant term to the right: Add '-550' to each side of the equation. 550 + -20x + -550 + x2 = 0 + -550 Reorder the terms: 550 + -550 + -20x + x2 = 0 + -550 Combine like terms: 550 + -550 = 0 0 + -20x + x2 = 0 + -550 -20x + x2 = 0 + -550 Combine like terms: 0 + -550 = -550 -20x + x2 = -550 The x term is -20x. Take half its coefficient (-10). Square it (100) and add it to both sides. Add '100' to each side of the equation. -20x + 100 + x2 = -550 + 100 Reorder the terms: 100 + -20x + x2 = -550 + 100 Combine like terms: -550 + 100 = -450 100 + -20x + x2 = -450 Factor a perfect square on the left side: (x + -10)(x + -10) = -450 Can't calculate square root of the right side. The solution to this equation could not be determined.
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