5x^2+5x+13=3x^2-7x+7

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Solution for 5x^2+5x+13=3x^2-7x+7 equation:


Simplifying
5x2 + 5x + 13 = 3x2 + -7x + 7

Reorder the terms:
13 + 5x + 5x2 = 3x2 + -7x + 7

Reorder the terms:
13 + 5x + 5x2 = 7 + -7x + 3x2

Solving
13 + 5x + 5x2 = 7 + -7x + 3x2

Solving for variable 'x'.

Reorder the terms:
13 + -7 + 5x + 7x + 5x2 + -3x2 = 7 + -7x + 3x2 + -7 + 7x + -3x2

Combine like terms: 13 + -7 = 6
6 + 5x + 7x + 5x2 + -3x2 = 7 + -7x + 3x2 + -7 + 7x + -3x2

Combine like terms: 5x + 7x = 12x
6 + 12x + 5x2 + -3x2 = 7 + -7x + 3x2 + -7 + 7x + -3x2

Combine like terms: 5x2 + -3x2 = 2x2
6 + 12x + 2x2 = 7 + -7x + 3x2 + -7 + 7x + -3x2

Reorder the terms:
6 + 12x + 2x2 = 7 + -7 + -7x + 7x + 3x2 + -3x2

Combine like terms: 7 + -7 = 0
6 + 12x + 2x2 = 0 + -7x + 7x + 3x2 + -3x2
6 + 12x + 2x2 = -7x + 7x + 3x2 + -3x2

Combine like terms: -7x + 7x = 0
6 + 12x + 2x2 = 0 + 3x2 + -3x2
6 + 12x + 2x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
6 + 12x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(3 + 6x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(3 + 6x + x2)' equal to zero and attempt to solve: Simplifying 3 + 6x + x2 = 0 Solving 3 + 6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-3' to each side of the equation. 3 + 6x + -3 + x2 = 0 + -3 Reorder the terms: 3 + -3 + 6x + x2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 6x + x2 = 0 + -3 6x + x2 = 0 + -3 Combine like terms: 0 + -3 = -3 6x + x2 = -3 The x term is 6x. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6x + 9 + x2 = -3 + 9 Reorder the terms: 9 + 6x + x2 = -3 + 9 Combine like terms: -3 + 9 = 6 9 + 6x + x2 = 6 Factor a perfect square on the left side: (x + 3)(x + 3) = 6 Calculate the square root of the right side: 2.449489743 Break this problem into two subproblems by setting (x + 3) equal to 2.449489743 and -2.449489743.

Subproblem 1

x + 3 = 2.449489743 Simplifying x + 3 = 2.449489743 Reorder the terms: 3 + x = 2.449489743 Solving 3 + x = 2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 2.449489743 + -3 Combine like terms: 3 + -3 = 0 0 + x = 2.449489743 + -3 x = 2.449489743 + -3 Combine like terms: 2.449489743 + -3 = -0.550510257 x = -0.550510257 Simplifying x = -0.550510257

Subproblem 2

x + 3 = -2.449489743 Simplifying x + 3 = -2.449489743 Reorder the terms: 3 + x = -2.449489743 Solving 3 + x = -2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -2.449489743 + -3 Combine like terms: 3 + -3 = 0 0 + x = -2.449489743 + -3 x = -2.449489743 + -3 Combine like terms: -2.449489743 + -3 = -5.449489743 x = -5.449489743 Simplifying x = -5.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.550510257, -5.449489743}

Solution

x = {-0.550510257, -5.449489743}

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