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Simplifying x = -16x2 + 400 Reorder the terms: x = 400 + -16x2 Solving x = 400 + -16x2 Solving for variable 'x'. Reorder the terms: -400 + x + 16x2 = 400 + -16x2 + -400 + 16x2 Reorder the terms: -400 + x + 16x2 = 400 + -400 + -16x2 + 16x2 Combine like terms: 400 + -400 = 0 -400 + x + 16x2 = 0 + -16x2 + 16x2 -400 + x + 16x2 = -16x2 + 16x2 Combine like terms: -16x2 + 16x2 = 0 -400 + x + 16x2 = 0 Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. -25 + 0.0625x + x2 = 0 Move the constant term to the right: Add '25' to each side of the equation. -25 + 0.0625x + 25 + x2 = 0 + 25 Reorder the terms: -25 + 25 + 0.0625x + x2 = 0 + 25 Combine like terms: -25 + 25 = 0 0 + 0.0625x + x2 = 0 + 25 0.0625x + x2 = 0 + 25 Combine like terms: 0 + 25 = 25 0.0625x + x2 = 25 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. 0.0625x + 0.25 + x2 = 25 + 0.25 Reorder the terms: 0.25 + 0.0625x + x2 = 25 + 0.25 Combine like terms: 25 + 0.25 = 25.25 0.25 + 0.0625x + x2 = 25.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 25.25 Calculate the square root of the right side: 5.024937811 Break this problem into two subproblems by setting (x + 0.5) equal to 5.024937811 and -5.024937811.Subproblem 1
x + 0.5 = 5.024937811 Simplifying x + 0.5 = 5.024937811 Reorder the terms: 0.5 + x = 5.024937811 Solving 0.5 + x = 5.024937811 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 = 5.024937811 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 5.024937811 + -0.5 x = 5.024937811 + -0.5 Combine like terms: 5.024937811 + -0.5 = 4.524937811 x = 4.524937811 Simplifying x = 4.524937811Subproblem 2
x + 0.5 = -5.024937811 Simplifying x + 0.5 = -5.024937811 Reorder the terms: 0.5 + x = -5.024937811 Solving 0.5 + x = -5.024937811 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 = -5.024937811 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -5.024937811 + -0.5 x = -5.024937811 + -0.5 Combine like terms: -5.024937811 + -0.5 = -5.524937811 x = -5.524937811 Simplifying x = -5.524937811Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.524937811, -5.524937811}
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