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Simplifying 5x2 + 20x + -525 = 0 Reorder the terms: -525 + 20x + 5x2 = 0 Solving -525 + 20x + 5x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '5'. 5(-105 + 4x + x2) = 0 Ignore the factor 5.Subproblem 1
Set the factor '(-105 + 4x + x2)' equal to zero and attempt to solve: Simplifying -105 + 4x + x2 = 0 Solving -105 + 4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '105' to each side of the equation. -105 + 4x + 105 + x2 = 0 + 105 Reorder the terms: -105 + 105 + 4x + x2 = 0 + 105 Combine like terms: -105 + 105 = 0 0 + 4x + x2 = 0 + 105 4x + x2 = 0 + 105 Combine like terms: 0 + 105 = 105 4x + x2 = 105 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = 105 + 4 Reorder the terms: 4 + 4x + x2 = 105 + 4 Combine like terms: 105 + 4 = 109 4 + 4x + x2 = 109 Factor a perfect square on the left side: (x + 2)(x + 2) = 109 Calculate the square root of the right side: 10.440306509 Break this problem into two subproblems by setting (x + 2) equal to 10.440306509 and -10.440306509.Subproblem 1
x + 2 = 10.440306509 Simplifying x + 2 = 10.440306509 Reorder the terms: 2 + x = 10.440306509 Solving 2 + x = 10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 10.440306509 + -2 Combine like terms: 2 + -2 = 0 0 + x = 10.440306509 + -2 x = 10.440306509 + -2 Combine like terms: 10.440306509 + -2 = 8.440306509 x = 8.440306509 Simplifying x = 8.440306509Subproblem 2
x + 2 = -10.440306509 Simplifying x + 2 = -10.440306509 Reorder the terms: 2 + x = -10.440306509 Solving 2 + x = -10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -10.440306509 + -2 Combine like terms: 2 + -2 = 0 0 + x = -10.440306509 + -2 x = -10.440306509 + -2 Combine like terms: -10.440306509 + -2 = -12.440306509 x = -12.440306509 Simplifying x = -12.440306509Solution
The solution to the problem is based on the solutions from the subproblems. x = {8.440306509, -12.440306509}Solution
x = {8.440306509, -12.440306509}
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