2x^2+2x=110

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Solution for 2x^2+2x=110 equation:


Simplifying
2x2 + 2x = 110

Reorder the terms:
2x + 2x2 = 110

Solving
2x + 2x2 = 110

Solving for variable 'x'.

Reorder the terms:
-110 + 2x + 2x2 = 110 + -110

Combine like terms: 110 + -110 = 0
-110 + 2x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-55 + x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-55 + x + x2)' equal to zero and attempt to solve: Simplifying -55 + x + x2 = 0 Solving -55 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '55' to each side of the equation. -55 + x + 55 + x2 = 0 + 55 Reorder the terms: -55 + 55 + x + x2 = 0 + 55 Combine like terms: -55 + 55 = 0 0 + x + x2 = 0 + 55 x + x2 = 0 + 55 Combine like terms: 0 + 55 = 55 x + x2 = 55 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. x + 0.25 + x2 = 55 + 0.25 Reorder the terms: 0.25 + x + x2 = 55 + 0.25 Combine like terms: 55 + 0.25 = 55.25 0.25 + x + x2 = 55.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 55.25 Calculate the square root of the right side: 7.433034374 Break this problem into two subproblems by setting (x + 0.5) equal to 7.433034374 and -7.433034374.

Subproblem 1

x + 0.5 = 7.433034374 Simplifying x + 0.5 = 7.433034374 Reorder the terms: 0.5 + x = 7.433034374 Solving 0.5 + x = 7.433034374 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 = 7.433034374 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 7.433034374 + -0.5 x = 7.433034374 + -0.5 Combine like terms: 7.433034374 + -0.5 = 6.933034374 x = 6.933034374 Simplifying x = 6.933034374

Subproblem 2

x + 0.5 = -7.433034374 Simplifying x + 0.5 = -7.433034374 Reorder the terms: 0.5 + x = -7.433034374 Solving 0.5 + x = -7.433034374 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 = -7.433034374 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -7.433034374 + -0.5 x = -7.433034374 + -0.5 Combine like terms: -7.433034374 + -0.5 = -7.933034374 x = -7.933034374 Simplifying x = -7.933034374

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.933034374, -7.933034374}

Solution

x = {6.933034374, -7.933034374}

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