30x+x^2+5x=180

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Solution for 30x+x^2+5x=180 equation:


Simplifying
30x + x2 + 5x = 180

Reorder the terms:
30x + 5x + x2 = 180

Combine like terms: 30x + 5x = 35x
35x + x2 = 180

Solving
35x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
-180 + 35x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-180 + 35x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '180' to each side of the equation.
-180 + 35x + 180 + x2 = 0 + 180

Reorder the terms:
-180 + 180 + 35x + x2 = 0 + 180

Combine like terms: -180 + 180 = 0
0 + 35x + x2 = 0 + 180
35x + x2 = 0 + 180

Combine like terms: 0 + 180 = 180
35x + x2 = 180

The x term is 35x.  Take half its coefficient (17.5).
Square it (306.25) and add it to both sides.

Add '306.25' to each side of the equation.
35x + 306.25 + x2 = 180 + 306.25

Reorder the terms:
306.25 + 35x + x2 = 180 + 306.25

Combine like terms: 180 + 306.25 = 486.25
306.25 + 35x + x2 = 486.25

Factor a perfect square on the left side:
(x + 17.5)(x + 17.5) = 486.25

Calculate the square root of the right side: 22.051077071

Break this problem into two subproblems by setting 
(x + 17.5) equal to 22.051077071 and -22.051077071.

Subproblem 1

x + 17.5 = 22.051077071 Simplifying x + 17.5 = 22.051077071 Reorder the terms: 17.5 + x = 22.051077071 Solving 17.5 + x = 22.051077071 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-17.5' to each side of the equation. 17.5 + -17.5 + x = 22.051077071 + -17.5 Combine like terms: 17.5 + -17.5 = 0.0 0.0 + x = 22.051077071 + -17.5 x = 22.051077071 + -17.5 Combine like terms: 22.051077071 + -17.5 = 4.551077071 x = 4.551077071 Simplifying x = 4.551077071

Subproblem 2

x + 17.5 = -22.051077071 Simplifying x + 17.5 = -22.051077071 Reorder the terms: 17.5 + x = -22.051077071 Solving 17.5 + x = -22.051077071 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-17.5' to each side of the equation. 17.5 + -17.5 + x = -22.051077071 + -17.5 Combine like terms: 17.5 + -17.5 = 0.0 0.0 + x = -22.051077071 + -17.5 x = -22.051077071 + -17.5 Combine like terms: -22.051077071 + -17.5 = -39.551077071 x = -39.551077071 Simplifying x = -39.551077071

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.551077071, -39.551077071}

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