x^2+x+5=625

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Solution for x^2+x+5=625 equation:


Simplifying
x2 + x + 5 = 625

Reorder the terms:
5 + x + x2 = 625

Solving
5 + x + x2 = 625

Solving for variable 'x'.

Reorder the terms:
5 + -625 + x + x2 = 625 + -625

Combine like terms: 5 + -625 = -620
-620 + x + x2 = 625 + -625

Combine like terms: 625 + -625 = 0
-620 + x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '620' to each side of the equation.
-620 + x + 620 + x2 = 0 + 620

Reorder the terms:
-620 + 620 + x + x2 = 0 + 620

Combine like terms: -620 + 620 = 0
0 + x + x2 = 0 + 620
x + x2 = 0 + 620

Combine like terms: 0 + 620 = 620
x + x2 = 620

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x + 0.25 + x2 = 620 + 0.25

Reorder the terms:
0.25 + x + x2 = 620 + 0.25

Combine like terms: 620 + 0.25 = 620.25
0.25 + x + x2 = 620.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 620.25

Calculate the square root of the right side: 24.904818811

Break this problem into two subproblems by setting 
(x + 0.5) equal to 24.904818811 and -24.904818811.

Subproblem 1

x + 0.5 = 24.904818811 Simplifying x + 0.5 = 24.904818811 Reorder the terms: 0.5 + x = 24.904818811 Solving 0.5 + x = 24.904818811 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 24.904818811 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 24.904818811 + -0.5 x = 24.904818811 + -0.5 Combine like terms: 24.904818811 + -0.5 = 24.404818811 x = 24.404818811 Simplifying x = 24.404818811

Subproblem 2

x + 0.5 = -24.904818811 Simplifying x + 0.5 = -24.904818811 Reorder the terms: 0.5 + x = -24.904818811 Solving 0.5 + x = -24.904818811 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -24.904818811 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -24.904818811 + -0.5 x = -24.904818811 + -0.5 Combine like terms: -24.904818811 + -0.5 = -25.404818811 x = -25.404818811 Simplifying x = -25.404818811

Solution

The solution to the problem is based on the solutions from the subproblems. x = {24.404818811, -25.404818811}

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