7875=x^2+29x

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Solution for 7875=x^2+29x equation:


Simplifying
7875 = x2 + 29x

Reorder the terms:
7875 = 29x + x2

Solving
7875 = 29x + x2

Solving for variable 'x'.

Reorder the terms:
7875 + -29x + -1x2 = 29x + -29x + x2 + -1x2

Combine like terms: 29x + -29x = 0
7875 + -29x + -1x2 = 0 + x2 + -1x2
7875 + -29x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
7875 + -29x + -1x2 = 0

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

Divide each side by '-1'.
-7875 + 29x + x2 = 0

Move the constant term to the right:

Add '7875' to each side of the equation.
-7875 + 29x + 7875 + x2 = 0 + 7875

Reorder the terms:
-7875 + 7875 + 29x + x2 = 0 + 7875

Combine like terms: -7875 + 7875 = 0
0 + 29x + x2 = 0 + 7875
29x + x2 = 0 + 7875

Combine like terms: 0 + 7875 = 7875
29x + x2 = 7875

The x term is 29x.  Take half its coefficient (14.5).
Square it (210.25) and add it to both sides.

Add '210.25' to each side of the equation.
29x + 210.25 + x2 = 7875 + 210.25

Reorder the terms:
210.25 + 29x + x2 = 7875 + 210.25

Combine like terms: 7875 + 210.25 = 8085.25
210.25 + 29x + x2 = 8085.25

Factor a perfect square on the left side:
(x + 14.5)(x + 14.5) = 8085.25

Calculate the square root of the right side: 89.918018217

Break this problem into two subproblems by setting 
(x + 14.5) equal to 89.918018217 and -89.918018217.

Subproblem 1

x + 14.5 = 89.918018217 Simplifying x + 14.5 = 89.918018217 Reorder the terms: 14.5 + x = 89.918018217 Solving 14.5 + x = 89.918018217 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14.5' to each side of the equation. 14.5 + -14.5 + x = 89.918018217 + -14.5 Combine like terms: 14.5 + -14.5 = 0.0 0.0 + x = 89.918018217 + -14.5 x = 89.918018217 + -14.5 Combine like terms: 89.918018217 + -14.5 = 75.418018217 x = 75.418018217 Simplifying x = 75.418018217

Subproblem 2

x + 14.5 = -89.918018217 Simplifying x + 14.5 = -89.918018217 Reorder the terms: 14.5 + x = -89.918018217 Solving 14.5 + x = -89.918018217 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14.5' to each side of the equation. 14.5 + -14.5 + x = -89.918018217 + -14.5 Combine like terms: 14.5 + -14.5 = 0.0 0.0 + x = -89.918018217 + -14.5 x = -89.918018217 + -14.5 Combine like terms: -89.918018217 + -14.5 = -104.418018217 x = -104.418018217 Simplifying x = -104.418018217

Solution

The solution to the problem is based on the solutions from the subproblems. x = {75.418018217, -104.418018217}

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