10x^2+50x=69

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Solution for 10x^2+50x=69 equation:


Simplifying
10x2 + 50x = 69

Reorder the terms:
50x + 10x2 = 69

Solving
50x + 10x2 = 69

Solving for variable 'x'.

Reorder the terms:
-69 + 50x + 10x2 = 69 + -69

Combine like terms: 69 + -69 = 0
-69 + 50x + 10x2 = 0

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

Divide each side by '10'.
-6.9 + 5x + x2 = 0

Move the constant term to the right:

Add '6.9' to each side of the equation.
-6.9 + 5x + 6.9 + x2 = 0 + 6.9

Reorder the terms:
-6.9 + 6.9 + 5x + x2 = 0 + 6.9

Combine like terms: -6.9 + 6.9 = 0.0
0.0 + 5x + x2 = 0 + 6.9
5x + x2 = 0 + 6.9

Combine like terms: 0 + 6.9 = 6.9
5x + x2 = 6.9

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 6.9 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 6.9 + 6.25

Combine like terms: 6.9 + 6.25 = 13.15
6.25 + 5x + x2 = 13.15

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 13.15

Calculate the square root of the right side: 3.626292873

Break this problem into two subproblems by setting 
(x + 2.5) equal to 3.626292873 and -3.626292873.

Subproblem 1

x + 2.5 = 3.626292873 Simplifying x + 2.5 = 3.626292873 Reorder the terms: 2.5 + x = 3.626292873 Solving 2.5 + x = 3.626292873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 3.626292873 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 3.626292873 + -2.5 x = 3.626292873 + -2.5 Combine like terms: 3.626292873 + -2.5 = 1.126292873 x = 1.126292873 Simplifying x = 1.126292873

Subproblem 2

x + 2.5 = -3.626292873 Simplifying x + 2.5 = -3.626292873 Reorder the terms: 2.5 + x = -3.626292873 Solving 2.5 + x = -3.626292873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -3.626292873 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -3.626292873 + -2.5 x = -3.626292873 + -2.5 Combine like terms: -3.626292873 + -2.5 = -6.126292873 x = -6.126292873 Simplifying x = -6.126292873

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.126292873, -6.126292873}

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