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Simplifying 5a2 + 4a + 1 = 0 Reorder the terms: 1 + 4a + 5a2 = 0 Solving 1 + 4a + 5a2 = 0 Solving for variable 'a'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 0.2 + 0.8a + a2 = 0 Move the constant term to the right: Add '-0.2' to each side of the equation. 0.2 + 0.8a + -0.2 + a2 = 0 + -0.2 Reorder the terms: 0.2 + -0.2 + 0.8a + a2 = 0 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + 0.8a + a2 = 0 + -0.2 0.8a + a2 = 0 + -0.2 Combine like terms: 0 + -0.2 = -0.2 0.8a + a2 = -0.2 The a term is 0.8a. Take half its coefficient (0.4). Square it (0.16) and add it to both sides. Add '0.16' to each side of the equation. 0.8a + 0.16 + a2 = -0.2 + 0.16 Reorder the terms: 0.16 + 0.8a + a2 = -0.2 + 0.16 Combine like terms: -0.2 + 0.16 = -0.04 0.16 + 0.8a + a2 = -0.04 Factor a perfect square on the left side: (a + 0.4)(a + 0.4) = -0.04 Can't calculate square root of the right side. The solution to this equation could not be determined.
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