8x^2+8x=22

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Solution for 8x^2+8x=22 equation:


Simplifying
8x2 + 8x = 22

Reorder the terms:
8x + 8x2 = 22

Solving
8x + 8x2 = 22

Solving for variable 'x'.

Reorder the terms:
-22 + 8x + 8x2 = 22 + -22

Combine like terms: 22 + -22 = 0
-22 + 8x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-11 + 4x + 4x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-11 + 4x + 4x2)' equal to zero and attempt to solve: Simplifying -11 + 4x + 4x2 = 0 Solving -11 + 4x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -2.75 + x + x2 = 0 Move the constant term to the right: Add '2.75' to each side of the equation. -2.75 + x + 2.75 + x2 = 0 + 2.75 Reorder the terms: -2.75 + 2.75 + x + x2 = 0 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x + x2 = 0 + 2.75 x + x2 = 0 + 2.75 Combine like terms: 0 + 2.75 = 2.75 x + x2 = 2.75 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. + 0.25 + x2 = 2.75 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = 2.75 + 0.25 Combine like terms: 2.75 + 0.25 = 3 1.25 + x2 = 3 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 3 Calculate the square root of the right side: 1.732050808 Break this problem into two subproblems by setting (x + 0.5) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + 0.5 = 1.732050808 Simplifying x + 0.5 = 1.732050808 Reorder the terms: 0.5 + x = 1.732050808 Solving 0.5 + x = 1.732050808 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 = 1.732050808 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.732050808 + -0.5 x = 1.732050808 + -0.5 Combine like terms: 1.732050808 + -0.5 = 1.232050808 x = 1.232050808 Simplifying x = 1.232050808

Subproblem 2

x + 0.5 = -1.732050808 Simplifying x + 0.5 = -1.732050808 Reorder the terms: 0.5 + x = -1.732050808 Solving 0.5 + x = -1.732050808 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 = -1.732050808 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.732050808 + -0.5 x = -1.732050808 + -0.5 Combine like terms: -1.732050808 + -0.5 = -2.232050808 x = -2.232050808 Simplifying x = -2.232050808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.232050808, -2.232050808}

Solution

x = {1.232050808, -2.232050808}

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