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Simplifying 5a2 + -9a + 5 = 0 Reorder the terms: 5 + -9a + 5a2 = 0 Solving 5 + -9a + 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'. 1 + -1.8a + a2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + -1.8a + -1 + a2 = 0 + -1 Reorder the terms: 1 + -1 + -1.8a + a2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1.8a + a2 = 0 + -1 -1.8a + a2 = 0 + -1 Combine like terms: 0 + -1 = -1 -1.8a + a2 = -1 The a term is -1.8a. Take half its coefficient (-0.9). Square it (0.81) and add it to both sides. Add '0.81' to each side of the equation. -1.8a + 0.81 + a2 = -1 + 0.81 Reorder the terms: 0.81 + -1.8a + a2 = -1 + 0.81 Combine like terms: -1 + 0.81 = -0.19 0.81 + -1.8a + a2 = -0.19 Factor a perfect square on the left side: (a + -0.9)(a + -0.9) = -0.19 Can't calculate square root of the right side. The solution to this equation could not be determined.
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