x^2-6x=49

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Solution for x^2-6x=49 equation:


Simplifying
x2 + -6x = 49

Reorder the terms:
-6x + x2 = 49

Solving
-6x + x2 = 49

Solving for variable 'x'.

Reorder the terms:
-49 + -6x + x2 = 49 + -49

Combine like terms: 49 + -49 = 0
-49 + -6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '49' to each side of the equation.
-49 + -6x + 49 + x2 = 0 + 49

Reorder the terms:
-49 + 49 + -6x + x2 = 0 + 49

Combine like terms: -49 + 49 = 0
0 + -6x + x2 = 0 + 49
-6x + x2 = 0 + 49

Combine like terms: 0 + 49 = 49
-6x + x2 = 49

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = 49 + 9

Reorder the terms:
9 + -6x + x2 = 49 + 9

Combine like terms: 49 + 9 = 58
9 + -6x + x2 = 58

Factor a perfect square on the left side:
(x + -3)(x + -3) = 58

Calculate the square root of the right side: 7.615773106

Break this problem into two subproblems by setting 
(x + -3) equal to 7.615773106 and -7.615773106.

Subproblem 1

x + -3 = 7.615773106 Simplifying x + -3 = 7.615773106 Reorder the terms: -3 + x = 7.615773106 Solving -3 + x = 7.615773106 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 7.615773106 + 3 Combine like terms: -3 + 3 = 0 0 + x = 7.615773106 + 3 x = 7.615773106 + 3 Combine like terms: 7.615773106 + 3 = 10.615773106 x = 10.615773106 Simplifying x = 10.615773106

Subproblem 2

x + -3 = -7.615773106 Simplifying x + -3 = -7.615773106 Reorder the terms: -3 + x = -7.615773106 Solving -3 + x = -7.615773106 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -7.615773106 + 3 Combine like terms: -3 + 3 = 0 0 + x = -7.615773106 + 3 x = -7.615773106 + 3 Combine like terms: -7.615773106 + 3 = -4.615773106 x = -4.615773106 Simplifying x = -4.615773106

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.615773106, -4.615773106}

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