25(x-1)+4x=x^2

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Solution for 25(x-1)+4x=x^2 equation:


Simplifying
25(x + -1) + 4x = x2

Reorder the terms:
25(-1 + x) + 4x = x2
(-1 * 25 + x * 25) + 4x = x2
(-25 + 25x) + 4x = x2

Combine like terms: 25x + 4x = 29x
-25 + 29x = x2

Solving
-25 + 29x = x2

Solving for variable 'x'.

Combine like terms: x2 + -1x2 = 0
-25 + 29x + -1x2 = 0

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

Divide each side by '-1'.
25 + -29x + x2 = 0

Move the constant term to the right:

Add '-25' to each side of the equation.
25 + -29x + -25 + x2 = 0 + -25

Reorder the terms:
25 + -25 + -29x + x2 = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -29x + x2 = 0 + -25
-29x + x2 = 0 + -25

Combine like terms: 0 + -25 = -25
-29x + x2 = -25

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 = -25 + 210.25

Reorder the terms:
210.25 + -29x + x2 = -25 + 210.25

Combine like terms: -25 + 210.25 = 185.25
210.25 + -29x + x2 = 185.25

Factor a perfect square on the left side:
(x + -14.5)(x + -14.5) = 185.25

Calculate the square root of the right side: 13.610657589

Break this problem into two subproblems by setting 
(x + -14.5) equal to 13.610657589 and -13.610657589.

Subproblem 1

x + -14.5 = 13.610657589 Simplifying x + -14.5 = 13.610657589 Reorder the terms: -14.5 + x = 13.610657589 Solving -14.5 + x = 13.610657589 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 = 13.610657589 + 14.5 Combine like terms: -14.5 + 14.5 = 0.0 0.0 + x = 13.610657589 + 14.5 x = 13.610657589 + 14.5 Combine like terms: 13.610657589 + 14.5 = 28.110657589 x = 28.110657589 Simplifying x = 28.110657589

Subproblem 2

x + -14.5 = -13.610657589 Simplifying x + -14.5 = -13.610657589 Reorder the terms: -14.5 + x = -13.610657589 Solving -14.5 + x = -13.610657589 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 = -13.610657589 + 14.5 Combine like terms: -14.5 + 14.5 = 0.0 0.0 + x = -13.610657589 + 14.5 x = -13.610657589 + 14.5 Combine like terms: -13.610657589 + 14.5 = 0.889342411 x = 0.889342411 Simplifying x = 0.889342411

Solution

The solution to the problem is based on the solutions from the subproblems. x = {28.110657589, 0.889342411}

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