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Simplifying x2 + 12x + 4.5 = 0 Reorder the terms: 4.5 + 12x + x2 = 0 Solving 4.5 + 12x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-4.5' to each side of the equation. 4.5 + 12x + -4.5 + x2 = 0 + -4.5 Reorder the terms: 4.5 + -4.5 + 12x + x2 = 0 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + 12x + x2 = 0 + -4.5 12x + x2 = 0 + -4.5 Combine like terms: 0 + -4.5 = -4.5 12x + x2 = -4.5 The x term is 12x. Take half its coefficient (6). Square it (36) and add it to both sides. Add '36' to each side of the equation. 12x + 36 + x2 = -4.5 + 36 Reorder the terms: 36 + 12x + x2 = -4.5 + 36 Combine like terms: -4.5 + 36 = 31.5 36 + 12x + x2 = 31.5 Factor a perfect square on the left side: (x + 6)(x + 6) = 31.5 Calculate the square root of the right side: 5.61248608 Break this problem into two subproblems by setting (x + 6) equal to 5.61248608 and -5.61248608.Subproblem 1
x + 6 = 5.61248608 Simplifying x + 6 = 5.61248608 Reorder the terms: 6 + x = 5.61248608 Solving 6 + x = 5.61248608 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 5.61248608 + -6 Combine like terms: 6 + -6 = 0 0 + x = 5.61248608 + -6 x = 5.61248608 + -6 Combine like terms: 5.61248608 + -6 = -0.38751392 x = -0.38751392 Simplifying x = -0.38751392Subproblem 2
x + 6 = -5.61248608 Simplifying x + 6 = -5.61248608 Reorder the terms: 6 + x = -5.61248608 Solving 6 + x = -5.61248608 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -5.61248608 + -6 Combine like terms: 6 + -6 = 0 0 + x = -5.61248608 + -6 x = -5.61248608 + -6 Combine like terms: -5.61248608 + -6 = -11.61248608 x = -11.61248608 Simplifying x = -11.61248608Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.38751392, -11.61248608}
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