692=x^2+5x

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Solution for 692=x^2+5x equation:


Simplifying
692 = x2 + 5x

Reorder the terms:
692 = 5x + x2

Solving
692 = 5x + x2

Solving for variable 'x'.

Reorder the terms:
692 + -5x + -1x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
692 + -5x + -1x2 = 0 + x2 + -1x2
692 + -5x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
692 + -5x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-692 + 5x + x2 = 0

Move the constant term to the right:

Add '692' to each side of the equation.
-692 + 5x + 692 + x2 = 0 + 692

Reorder the terms:
-692 + 692 + 5x + x2 = 0 + 692

Combine like terms: -692 + 692 = 0
0 + 5x + x2 = 0 + 692
5x + x2 = 0 + 692

Combine like terms: 0 + 692 = 692
5x + x2 = 692

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 = 692 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 692 + 6.25

Combine like terms: 692 + 6.25 = 698.25
6.25 + 5x + x2 = 698.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 698.25

Calculate the square root of the right side: 26.424420523

Break this problem into two subproblems by setting 
(x + 2.5) equal to 26.424420523 and -26.424420523.

Subproblem 1

x + 2.5 = 26.424420523 Simplifying x + 2.5 = 26.424420523 Reorder the terms: 2.5 + x = 26.424420523 Solving 2.5 + x = 26.424420523 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 = 26.424420523 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 26.424420523 + -2.5 x = 26.424420523 + -2.5 Combine like terms: 26.424420523 + -2.5 = 23.924420523 x = 23.924420523 Simplifying x = 23.924420523

Subproblem 2

x + 2.5 = -26.424420523 Simplifying x + 2.5 = -26.424420523 Reorder the terms: 2.5 + x = -26.424420523 Solving 2.5 + x = -26.424420523 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 = -26.424420523 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -26.424420523 + -2.5 x = -26.424420523 + -2.5 Combine like terms: -26.424420523 + -2.5 = -28.924420523 x = -28.924420523 Simplifying x = -28.924420523

Solution

The solution to the problem is based on the solutions from the subproblems. x = {23.924420523, -28.924420523}

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