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Simplifying 5x2 + 16x = 11 Reorder the terms: 16x + 5x2 = 11 Solving 16x + 5x2 = 11 Solving for variable 'x'. Reorder the terms: -11 + 16x + 5x2 = 11 + -11 Combine like terms: 11 + -11 = 0 -11 + 16x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -2.2 + 3.2x + x2 = 0 Move the constant term to the right: Add '2.2' to each side of the equation. -2.2 + 3.2x + 2.2 + x2 = 0 + 2.2 Reorder the terms: -2.2 + 2.2 + 3.2x + x2 = 0 + 2.2 Combine like terms: -2.2 + 2.2 = 0.0 0.0 + 3.2x + x2 = 0 + 2.2 3.2x + x2 = 0 + 2.2 Combine like terms: 0 + 2.2 = 2.2 3.2x + x2 = 2.2 The x term is 3.2x. Take half its coefficient (1.6). Square it (2.56) and add it to both sides. Add '2.56' to each side of the equation. 3.2x + 2.56 + x2 = 2.2 + 2.56 Reorder the terms: 2.56 + 3.2x + x2 = 2.2 + 2.56 Combine like terms: 2.2 + 2.56 = 4.76 2.56 + 3.2x + x2 = 4.76 Factor a perfect square on the left side: (x + 1.6)(x + 1.6) = 4.76 Calculate the square root of the right side: 2.181742423 Break this problem into two subproblems by setting (x + 1.6) equal to 2.181742423 and -2.181742423.Subproblem 1
x + 1.6 = 2.181742423 Simplifying x + 1.6 = 2.181742423 Reorder the terms: 1.6 + x = 2.181742423 Solving 1.6 + x = 2.181742423 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.6' to each side of the equation. 1.6 + -1.6 + x = 2.181742423 + -1.6 Combine like terms: 1.6 + -1.6 = 0.0 0.0 + x = 2.181742423 + -1.6 x = 2.181742423 + -1.6 Combine like terms: 2.181742423 + -1.6 = 0.581742423 x = 0.581742423 Simplifying x = 0.581742423Subproblem 2
x + 1.6 = -2.181742423 Simplifying x + 1.6 = -2.181742423 Reorder the terms: 1.6 + x = -2.181742423 Solving 1.6 + x = -2.181742423 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.6' to each side of the equation. 1.6 + -1.6 + x = -2.181742423 + -1.6 Combine like terms: 1.6 + -1.6 = 0.0 0.0 + x = -2.181742423 + -1.6 x = -2.181742423 + -1.6 Combine like terms: -2.181742423 + -1.6 = -3.781742423 x = -3.781742423 Simplifying x = -3.781742423Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.581742423, -3.781742423}
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