x+512=20x^2+512x

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Solution for x+512=20x^2+512x equation:


Simplifying
x + 512 = 20x2 + 512x

Reorder the terms:
512 + x = 20x2 + 512x

Reorder the terms:
512 + x = 512x + 20x2

Solving
512 + x = 512x + 20x2

Solving for variable 'x'.

Combine like terms: x + -512x = -511x
512 + -511x + -20x2 = 512x + 20x2 + -512x + -20x2

Reorder the terms:
512 + -511x + -20x2 = 512x + -512x + 20x2 + -20x2

Combine like terms: 512x + -512x = 0
512 + -511x + -20x2 = 0 + 20x2 + -20x2
512 + -511x + -20x2 = 20x2 + -20x2

Combine like terms: 20x2 + -20x2 = 0
512 + -511x + -20x2 = 0

Begin completing the square.  Divide all terms by
-20 the coefficient of the squared term: 

Divide each side by '-20'.
-25.6 + 25.55x + x2 = 0

Move the constant term to the right:

Add '25.6' to each side of the equation.
-25.6 + 25.55x + 25.6 + x2 = 0 + 25.6

Reorder the terms:
-25.6 + 25.6 + 25.55x + x2 = 0 + 25.6

Combine like terms: -25.6 + 25.6 = 0.0
0.0 + 25.55x + x2 = 0 + 25.6
25.55x + x2 = 0 + 25.6

Combine like terms: 0 + 25.6 = 25.6
25.55x + x2 = 25.6

The x term is 25.55x.  Take half its coefficient (12.775).
Square it (163.200625) and add it to both sides.

Add '163.200625' to each side of the equation.
25.55x + 163.200625 + x2 = 25.6 + 163.200625

Reorder the terms:
163.200625 + 25.55x + x2 = 25.6 + 163.200625

Combine like terms: 25.6 + 163.200625 = 188.800625
163.200625 + 25.55x + x2 = 188.800625

Factor a perfect square on the left side:
(x + 12.775)(x + 12.775) = 188.800625

Calculate the square root of the right side: 13.740473973

Break this problem into two subproblems by setting 
(x + 12.775) equal to 13.740473973 and -13.740473973.

Subproblem 1

x + 12.775 = 13.740473973 Simplifying x + 12.775 = 13.740473973 Reorder the terms: 12.775 + x = 13.740473973 Solving 12.775 + x = 13.740473973 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.775' to each side of the equation. 12.775 + -12.775 + x = 13.740473973 + -12.775 Combine like terms: 12.775 + -12.775 = 0.000 0.000 + x = 13.740473973 + -12.775 x = 13.740473973 + -12.775 Combine like terms: 13.740473973 + -12.775 = 0.965473973 x = 0.965473973 Simplifying x = 0.965473973

Subproblem 2

x + 12.775 = -13.740473973 Simplifying x + 12.775 = -13.740473973 Reorder the terms: 12.775 + x = -13.740473973 Solving 12.775 + x = -13.740473973 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.775' to each side of the equation. 12.775 + -12.775 + x = -13.740473973 + -12.775 Combine like terms: 12.775 + -12.775 = 0.000 0.000 + x = -13.740473973 + -12.775 x = -13.740473973 + -12.775 Combine like terms: -13.740473973 + -12.775 = -26.515473973 x = -26.515473973 Simplifying x = -26.515473973

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.965473973, -26.515473973}

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