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Simplifying 10x2 + 20x = 180 Reorder the terms: 20x + 10x2 = 180 Solving 20x + 10x2 = 180 Solving for variable 'x'. Reorder the terms: -180 + 20x + 10x2 = 180 + -180 Combine like terms: 180 + -180 = 0 -180 + 20x + 10x2 = 0 Factor out the Greatest Common Factor (GCF), '10'. 10(-18 + 2x + x2) = 0 Ignore the factor 10.Subproblem 1
Set the factor '(-18 + 2x + x2)' equal to zero and attempt to solve: Simplifying -18 + 2x + x2 = 0 Solving -18 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '18' to each side of the equation. -18 + 2x + 18 + x2 = 0 + 18 Reorder the terms: -18 + 18 + 2x + x2 = 0 + 18 Combine like terms: -18 + 18 = 0 0 + 2x + x2 = 0 + 18 2x + x2 = 0 + 18 Combine like terms: 0 + 18 = 18 2x + x2 = 18 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 18 + 1 Reorder the terms: 1 + 2x + x2 = 18 + 1 Combine like terms: 18 + 1 = 19 1 + 2x + x2 = 19 Factor a perfect square on the left side: (x + 1)(x + 1) = 19 Calculate the square root of the right side: 4.358898944 Break this problem into two subproblems by setting (x + 1) equal to 4.358898944 and -4.358898944.Subproblem 1
x + 1 = 4.358898944 Simplifying x + 1 = 4.358898944 Reorder the terms: 1 + x = 4.358898944 Solving 1 + x = 4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 4.358898944 + -1 Combine like terms: 1 + -1 = 0 0 + x = 4.358898944 + -1 x = 4.358898944 + -1 Combine like terms: 4.358898944 + -1 = 3.358898944 x = 3.358898944 Simplifying x = 3.358898944Subproblem 2
x + 1 = -4.358898944 Simplifying x + 1 = -4.358898944 Reorder the terms: 1 + x = -4.358898944 Solving 1 + x = -4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -4.358898944 + -1 Combine like terms: 1 + -1 = 0 0 + x = -4.358898944 + -1 x = -4.358898944 + -1 Combine like terms: -4.358898944 + -1 = -5.358898944 x = -5.358898944 Simplifying x = -5.358898944Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.358898944, -5.358898944}Solution
x = {3.358898944, -5.358898944}
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