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Simplifying 7x2 + -7x = 336 Reorder the terms: -7x + 7x2 = 336 Solving -7x + 7x2 = 336 Solving for variable 'x'. Reorder the terms: -336 + -7x + 7x2 = 336 + -336 Combine like terms: 336 + -336 = 0 -336 + -7x + 7x2 = 0 Factor out the Greatest Common Factor (GCF), '7'. 7(-48 + -1x + x2) = 0 Ignore the factor 7.Subproblem 1
Set the factor '(-48 + -1x + x2)' equal to zero and attempt to solve: Simplifying -48 + -1x + x2 = 0 Solving -48 + -1x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '48' to each side of the equation. -48 + -1x + 48 + x2 = 0 + 48 Reorder the terms: -48 + 48 + -1x + x2 = 0 + 48 Combine like terms: -48 + 48 = 0 0 + -1x + x2 = 0 + 48 -1x + x2 = 0 + 48 Combine like terms: 0 + 48 = 48 -1x + x2 = 48 The x term is -1x. 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. -1x + 0.25 + x2 = 48 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 48 + 0.25 Combine like terms: 48 + 0.25 = 48.25 0.25 + -1x + x2 = 48.25 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 48.25 Calculate the square root of the right side: 6.946221995 Break this problem into two subproblems by setting (x + -0.5) equal to 6.946221995 and -6.946221995.Subproblem 1
x + -0.5 = 6.946221995 Simplifying x + -0.5 = 6.946221995 Reorder the terms: -0.5 + x = 6.946221995 Solving -0.5 + x = 6.946221995 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 = 6.946221995 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 6.946221995 + 0.5 x = 6.946221995 + 0.5 Combine like terms: 6.946221995 + 0.5 = 7.446221995 x = 7.446221995 Simplifying x = 7.446221995Subproblem 2
x + -0.5 = -6.946221995 Simplifying x + -0.5 = -6.946221995 Reorder the terms: -0.5 + x = -6.946221995 Solving -0.5 + x = -6.946221995 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 = -6.946221995 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -6.946221995 + 0.5 x = -6.946221995 + 0.5 Combine like terms: -6.946221995 + 0.5 = -6.446221995 x = -6.446221995 Simplifying x = -6.446221995Solution
The solution to the problem is based on the solutions from the subproblems. x = {7.446221995, -6.446221995}Solution
x = {7.446221995, -6.446221995}
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