2x^2+6x=95

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Solution for 2x^2+6x=95 equation:


Simplifying
2x2 + 6x = 95

Reorder the terms:
6x + 2x2 = 95

Solving
6x + 2x2 = 95

Solving for variable 'x'.

Reorder the terms:
-95 + 6x + 2x2 = 95 + -95

Combine like terms: 95 + -95 = 0
-95 + 6x + 2x2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-47.5 + 3x + x2 = 0

Move the constant term to the right:

Add '47.5' to each side of the equation.
-47.5 + 3x + 47.5 + x2 = 0 + 47.5

Reorder the terms:
-47.5 + 47.5 + 3x + x2 = 0 + 47.5

Combine like terms: -47.5 + 47.5 = 0.0
0.0 + 3x + x2 = 0 + 47.5
3x + x2 = 0 + 47.5

Combine like terms: 0 + 47.5 = 47.5
3x + x2 = 47.5

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 47.5 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 47.5 + 2.25

Combine like terms: 47.5 + 2.25 = 49.75
2.25 + 3x + x2 = 49.75

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 49.75

Calculate the square root of the right side: 7.05336799

Break this problem into two subproblems by setting 
(x + 1.5) equal to 7.05336799 and -7.05336799.

Subproblem 1

x + 1.5 = 7.05336799 Simplifying x + 1.5 = 7.05336799 Reorder the terms: 1.5 + x = 7.05336799 Solving 1.5 + x = 7.05336799 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 7.05336799 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 7.05336799 + -1.5 x = 7.05336799 + -1.5 Combine like terms: 7.05336799 + -1.5 = 5.55336799 x = 5.55336799 Simplifying x = 5.55336799

Subproblem 2

x + 1.5 = -7.05336799 Simplifying x + 1.5 = -7.05336799 Reorder the terms: 1.5 + x = -7.05336799 Solving 1.5 + x = -7.05336799 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -7.05336799 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -7.05336799 + -1.5 x = -7.05336799 + -1.5 Combine like terms: -7.05336799 + -1.5 = -8.55336799 x = -8.55336799 Simplifying x = -8.55336799

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.55336799, -8.55336799}

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