x^2=-10x+38

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Solution for x^2=-10x+38 equation:


Simplifying
x2 = -10x + 38

Reorder the terms:
x2 = 38 + -10x

Solving
x2 = 38 + -10x

Solving for variable 'x'.

Reorder the terms:
-38 + 10x + x2 = 38 + -10x + -38 + 10x

Reorder the terms:
-38 + 10x + x2 = 38 + -38 + -10x + 10x

Combine like terms: 38 + -38 = 0
-38 + 10x + x2 = 0 + -10x + 10x
-38 + 10x + x2 = -10x + 10x

Combine like terms: -10x + 10x = 0
-38 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '38' to each side of the equation.
-38 + 10x + 38 + x2 = 0 + 38

Reorder the terms:
-38 + 38 + 10x + x2 = 0 + 38

Combine like terms: -38 + 38 = 0
0 + 10x + x2 = 0 + 38
10x + x2 = 0 + 38

Combine like terms: 0 + 38 = 38
10x + x2 = 38

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 38 + 25

Reorder the terms:
25 + 10x + x2 = 38 + 25

Combine like terms: 38 + 25 = 63
25 + 10x + x2 = 63

Factor a perfect square on the left side:
(x + 5)(x + 5) = 63

Calculate the square root of the right side: 7.937253933

Break this problem into two subproblems by setting 
(x + 5) equal to 7.937253933 and -7.937253933.

Subproblem 1

x + 5 = 7.937253933 Simplifying x + 5 = 7.937253933 Reorder the terms: 5 + x = 7.937253933 Solving 5 + x = 7.937253933 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 7.937253933 + -5 Combine like terms: 5 + -5 = 0 0 + x = 7.937253933 + -5 x = 7.937253933 + -5 Combine like terms: 7.937253933 + -5 = 2.937253933 x = 2.937253933 Simplifying x = 2.937253933

Subproblem 2

x + 5 = -7.937253933 Simplifying x + 5 = -7.937253933 Reorder the terms: 5 + x = -7.937253933 Solving 5 + x = -7.937253933 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -7.937253933 + -5 Combine like terms: 5 + -5 = 0 0 + x = -7.937253933 + -5 x = -7.937253933 + -5 Combine like terms: -7.937253933 + -5 = -12.937253933 x = -12.937253933 Simplifying x = -12.937253933

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.937253933, -12.937253933}

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