2(x)(x)+8x-56=-6

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Solution for 2(x)(x)+8x-56=-6 equation:


Simplifying
2(x)(x) + 8x + -56 = -6

Multiply x * x
2x2 + 8x + -56 = -6

Reorder the terms:
-56 + 8x + 2x2 = -6

Solving
-56 + 8x + 2x2 = -6

Solving for variable 'x'.

Reorder the terms:
-56 + 6 + 8x + 2x2 = -6 + 6

Combine like terms: -56 + 6 = -50
-50 + 8x + 2x2 = -6 + 6

Combine like terms: -6 + 6 = 0
-50 + 8x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-25 + 4x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-25 + 4x + x2)' equal to zero and attempt to solve: Simplifying -25 + 4x + x2 = 0 Solving -25 + 4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '25' to each side of the equation. -25 + 4x + 25 + x2 = 0 + 25 Reorder the terms: -25 + 25 + 4x + x2 = 0 + 25 Combine like terms: -25 + 25 = 0 0 + 4x + x2 = 0 + 25 4x + x2 = 0 + 25 Combine like terms: 0 + 25 = 25 4x + x2 = 25 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 = 25 + 4 Reorder the terms: 4 + 4x + x2 = 25 + 4 Combine like terms: 25 + 4 = 29 4 + 4x + x2 = 29 Factor a perfect square on the left side: (x + 2)(x + 2) = 29 Calculate the square root of the right side: 5.385164807 Break this problem into two subproblems by setting (x + 2) equal to 5.385164807 and -5.385164807.

Subproblem 1

x + 2 = 5.385164807 Simplifying x + 2 = 5.385164807 Reorder the terms: 2 + x = 5.385164807 Solving 2 + x = 5.385164807 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 = 5.385164807 + -2 Combine like terms: 2 + -2 = 0 0 + x = 5.385164807 + -2 x = 5.385164807 + -2 Combine like terms: 5.385164807 + -2 = 3.385164807 x = 3.385164807 Simplifying x = 3.385164807

Subproblem 2

x + 2 = -5.385164807 Simplifying x + 2 = -5.385164807 Reorder the terms: 2 + x = -5.385164807 Solving 2 + x = -5.385164807 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 = -5.385164807 + -2 Combine like terms: 2 + -2 = 0 0 + x = -5.385164807 + -2 x = -5.385164807 + -2 Combine like terms: -5.385164807 + -2 = -7.385164807 x = -7.385164807 Simplifying x = -7.385164807

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.385164807, -7.385164807}

Solution

x = {3.385164807, -7.385164807}

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