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Simplifying 36 + -5x + -5x2 = 0 Solving 36 + -5x + -5x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -5 the coefficient of the squared term: Divide each side by '-5'. -7.2 + x + x2 = 0 Move the constant term to the right: Add '7.2' to each side of the equation. -7.2 + x + 7.2 + x2 = 0 + 7.2 Reorder the terms: -7.2 + 7.2 + x + x2 = 0 + 7.2 Combine like terms: -7.2 + 7.2 = 0.0 0.0 + x + x2 = 0 + 7.2 x + x2 = 0 + 7.2 Combine like terms: 0 + 7.2 = 7.2 x + x2 = 7.2 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 = 7.2 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = 7.2 + 0.25 Combine like terms: 7.2 + 0.25 = 7.45 1.25 + x2 = 7.45 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 7.45 Calculate the square root of the right side: 2.729468813 Break this problem into two subproblems by setting (x + 0.5) equal to 2.729468813 and -2.729468813.Subproblem 1
x + 0.5 = 2.729468813 Simplifying x + 0.5 = 2.729468813 Reorder the terms: 0.5 + x = 2.729468813 Solving 0.5 + x = 2.729468813 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 = 2.729468813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 2.729468813 + -0.5 x = 2.729468813 + -0.5 Combine like terms: 2.729468813 + -0.5 = 2.229468813 x = 2.229468813 Simplifying x = 2.229468813Subproblem 2
x + 0.5 = -2.729468813 Simplifying x + 0.5 = -2.729468813 Reorder the terms: 0.5 + x = -2.729468813 Solving 0.5 + x = -2.729468813 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 = -2.729468813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -2.729468813 + -0.5 x = -2.729468813 + -0.5 Combine like terms: -2.729468813 + -0.5 = -3.229468813 x = -3.229468813 Simplifying x = -3.229468813Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.229468813, -3.229468813}
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