x^2=19+5x

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Solution for x^2=19+5x equation:


Simplifying
x2 = 19 + 5x

Solving
x2 = 19 + 5x

Solving for variable 'x'.

Reorder the terms:
-19 + -5x + x2 = 19 + 5x + -19 + -5x

Reorder the terms:
-19 + -5x + x2 = 19 + -19 + 5x + -5x

Combine like terms: 19 + -19 = 0
-19 + -5x + x2 = 0 + 5x + -5x
-19 + -5x + x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-19 + -5x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '19' to each side of the equation.
-19 + -5x + 19 + x2 = 0 + 19

Reorder the terms:
-19 + 19 + -5x + x2 = 0 + 19

Combine like terms: -19 + 19 = 0
0 + -5x + x2 = 0 + 19
-5x + x2 = 0 + 19

Combine like terms: 0 + 19 = 19
-5x + x2 = 19

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 19 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 19 + 6.25

Combine like terms: 19 + 6.25 = 25.25
6.25 + -5x + x2 = 25.25

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 25.25

Calculate the square root of the right side: 5.024937811

Break this problem into two subproblems by setting 
(x + -2.5) equal to 5.024937811 and -5.024937811.

Subproblem 1

x + -2.5 = 5.024937811 Simplifying x + -2.5 = 5.024937811 Reorder the terms: -2.5 + x = 5.024937811 Solving -2.5 + x = 5.024937811 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 5.024937811 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 5.024937811 + 2.5 x = 5.024937811 + 2.5 Combine like terms: 5.024937811 + 2.5 = 7.524937811 x = 7.524937811 Simplifying x = 7.524937811

Subproblem 2

x + -2.5 = -5.024937811 Simplifying x + -2.5 = -5.024937811 Reorder the terms: -2.5 + x = -5.024937811 Solving -2.5 + x = -5.024937811 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -5.024937811 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -5.024937811 + 2.5 x = -5.024937811 + 2.5 Combine like terms: -5.024937811 + 2.5 = -2.524937811 x = -2.524937811 Simplifying x = -2.524937811

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.524937811, -2.524937811}

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