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Simplifying 14 = 5x + 5x2 Solving 14 = 5x + 5x2 Solving for variable 'x'. Reorder the terms: 14 + -5x + -5x2 = 5x + -5x + 5x2 + -5x2 Combine like terms: 5x + -5x = 0 14 + -5x + -5x2 = 0 + 5x2 + -5x2 14 + -5x + -5x2 = 5x2 + -5x2 Combine like terms: 5x2 + -5x2 = 0 14 + -5x + -5x2 = 0 Begin completing the square. Divide all terms by -5 the coefficient of the squared term: Divide each side by '-5'. -2.8 + x + x2 = 0 Move the constant term to the right: Add '2.8' to each side of the equation. -2.8 + x + 2.8 + x2 = 0 + 2.8 Reorder the terms: -2.8 + 2.8 + x + x2 = 0 + 2.8 Combine like terms: -2.8 + 2.8 = 0.0 0.0 + x + x2 = 0 + 2.8 x + x2 = 0 + 2.8 Combine like terms: 0 + 2.8 = 2.8 x + x2 = 2.8 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. + 0.25 + x2 = 2.8 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = 2.8 + 0.25 Combine like terms: 2.8 + 0.25 = 3.05 1.25 + x2 = 3.05 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 3.05 Calculate the square root of the right side: 1.74642492 Break this problem into two subproblems by setting (x + 0.5) equal to 1.74642492 and -1.74642492.Subproblem 1
x + 0.5 = 1.74642492 Simplifying x + 0.5 = 1.74642492 Reorder the terms: 0.5 + x = 1.74642492 Solving 0.5 + x = 1.74642492 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.74642492 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.74642492 + -0.5 x = 1.74642492 + -0.5 Combine like terms: 1.74642492 + -0.5 = 1.24642492 x = 1.24642492 Simplifying x = 1.24642492Subproblem 2
x + 0.5 = -1.74642492 Simplifying x + 0.5 = -1.74642492 Reorder the terms: 0.5 + x = -1.74642492 Solving 0.5 + x = -1.74642492 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.74642492 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.74642492 + -0.5 x = -1.74642492 + -0.5 Combine like terms: -1.74642492 + -0.5 = -2.24642492 x = -2.24642492 Simplifying x = -2.24642492Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.24642492, -2.24642492}
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