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Simplifying a2 + 4a + 12 = 0 Reorder the terms: 12 + 4a + a2 = 0 Solving 12 + 4a + a2 = 0 Solving for variable 'a'. Begin completing the square. Move the constant term to the right: Add '-12' to each side of the equation. 12 + 4a + -12 + a2 = 0 + -12 Reorder the terms: 12 + -12 + 4a + a2 = 0 + -12 Combine like terms: 12 + -12 = 0 0 + 4a + a2 = 0 + -12 4a + a2 = 0 + -12 Combine like terms: 0 + -12 = -12 4a + a2 = -12 The a term is 4a. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4a + 4 + a2 = -12 + 4 Reorder the terms: 4 + 4a + a2 = -12 + 4 Combine like terms: -12 + 4 = -8 4 + 4a + a2 = -8 Factor a perfect square on the left side: (a + 2)(a + 2) = -8 Can't calculate square root of the right side. The solution to this equation could not be determined.
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