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Simplifying 8a2 + -3a + 9 = 0 Reorder the terms: 9 + -3a + 8a2 = 0 Solving 9 + -3a + 8a2 = 0 Solving for variable 'a'. Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. 1.125 + -0.375a + a2 = 0 Move the constant term to the right: Add '-1.125' to each side of the equation. 1.125 + -0.375a + -1.125 + a2 = 0 + -1.125 Reorder the terms: 1.125 + -1.125 + -0.375a + a2 = 0 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + -0.375a + a2 = 0 + -1.125 -0.375a + a2 = 0 + -1.125 Combine like terms: 0 + -1.125 = -1.125 -0.375a + a2 = -1.125 The a term is -0.375a. Take half its coefficient (-0.1875). Square it (0.03515625) and add it to both sides. Add '0.03515625' to each side of the equation. -0.375a + 0.03515625 + a2 = -1.125 + 0.03515625 Reorder the terms: 0.03515625 + -0.375a + a2 = -1.125 + 0.03515625 Combine like terms: -1.125 + 0.03515625 = -1.08984375 0.03515625 + -0.375a + a2 = -1.08984375 Factor a perfect square on the left side: (a + -0.1875)(a + -0.1875) = -1.08984375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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