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Simplifying 8a2 + -19a + 15 = 0 Reorder the terms: 15 + -19a + 8a2 = 0 Solving 15 + -19a + 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'. 1.875 + -2.375a + a2 = 0 Move the constant term to the right: Add '-1.875' to each side of the equation. 1.875 + -2.375a + -1.875 + a2 = 0 + -1.875 Reorder the terms: 1.875 + -1.875 + -2.375a + a2 = 0 + -1.875 Combine like terms: 1.875 + -1.875 = 0.000 0.000 + -2.375a + a2 = 0 + -1.875 -2.375a + a2 = 0 + -1.875 Combine like terms: 0 + -1.875 = -1.875 -2.375a + a2 = -1.875 The a term is -2.375a. Take half its coefficient (-1.1875). Square it (1.41015625) and add it to both sides. Add '1.41015625' to each side of the equation. -2.375a + 1.41015625 + a2 = -1.875 + 1.41015625 Reorder the terms: 1.41015625 + -2.375a + a2 = -1.875 + 1.41015625 Combine like terms: -1.875 + 1.41015625 = -0.46484375 1.41015625 + -2.375a + a2 = -0.46484375 Factor a perfect square on the left side: (a + -1.1875)(a + -1.1875) = -0.46484375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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