0.625x^2+5x=57750

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Solution for 0.625x^2+5x=57750 equation:


Simplifying
0.625x2 + 5x = 57750

Reorder the terms:
5x + 0.625x2 = 57750

Solving
5x + 0.625x2 = 57750

Solving for variable 'x'.

Reorder the terms:
-57750 + 5x + 0.625x2 = 57750 + -57750

Combine like terms: 57750 + -57750 = 0
-57750 + 5x + 0.625x2 = 0

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

Divide each side by '0.625'.
-92400 + 8x + x2 = 0

Move the constant term to the right:

Add '92400' to each side of the equation.
-92400 + 8x + 92400 + x2 = 0 + 92400

Reorder the terms:
-92400 + 92400 + 8x + x2 = 0 + 92400

Combine like terms: -92400 + 92400 = 0
0 + 8x + x2 = 0 + 92400
8x + x2 = 0 + 92400

Combine like terms: 0 + 92400 = 92400
8x + x2 = 92400

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 92400 + 16

Reorder the terms:
16 + 8x + x2 = 92400 + 16

Combine like terms: 92400 + 16 = 92416
16 + 8x + x2 = 92416

Factor a perfect square on the left side:
(x + 4)(x + 4) = 92416

Calculate the square root of the right side: 304

Break this problem into two subproblems by setting 
(x + 4) equal to 304 and -304.

Subproblem 1

x + 4 = 304 Simplifying x + 4 = 304 Reorder the terms: 4 + x = 304 Solving 4 + x = 304 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 304 + -4 Combine like terms: 4 + -4 = 0 0 + x = 304 + -4 x = 304 + -4 Combine like terms: 304 + -4 = 300 x = 300 Simplifying x = 300

Subproblem 2

x + 4 = -304 Simplifying x + 4 = -304 Reorder the terms: 4 + x = -304 Solving 4 + x = -304 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -304 + -4 Combine like terms: 4 + -4 = 0 0 + x = -304 + -4 x = -304 + -4 Combine like terms: -304 + -4 = -308 x = -308 Simplifying x = -308

Solution

The solution to the problem is based on the solutions from the subproblems. x = {300, -308}

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