70=x^2-6x

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Solution for 70=x^2-6x equation:


Simplifying
70 = x2 + -6x

Reorder the terms:
70 = -6x + x2

Solving
70 = -6x + x2

Solving for variable 'x'.

Reorder the terms:
70 + 6x + -1x2 = -6x + 6x + x2 + -1x2

Combine like terms: -6x + 6x = 0
70 + 6x + -1x2 = 0 + x2 + -1x2
70 + 6x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
70 + 6x + -1x2 = 0

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

Divide each side by '-1'.
-70 + -6x + x2 = 0

Move the constant term to the right:

Add '70' to each side of the equation.
-70 + -6x + 70 + x2 = 0 + 70

Reorder the terms:
-70 + 70 + -6x + x2 = 0 + 70

Combine like terms: -70 + 70 = 0
0 + -6x + x2 = 0 + 70
-6x + x2 = 0 + 70

Combine like terms: 0 + 70 = 70
-6x + x2 = 70

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 = 70 + 9

Reorder the terms:
9 + -6x + x2 = 70 + 9

Combine like terms: 70 + 9 = 79
9 + -6x + x2 = 79

Factor a perfect square on the left side:
(x + -3)(x + -3) = 79

Calculate the square root of the right side: 8.888194417

Break this problem into two subproblems by setting 
(x + -3) equal to 8.888194417 and -8.888194417.

Subproblem 1

x + -3 = 8.888194417 Simplifying x + -3 = 8.888194417 Reorder the terms: -3 + x = 8.888194417 Solving -3 + x = 8.888194417 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 = 8.888194417 + 3 Combine like terms: -3 + 3 = 0 0 + x = 8.888194417 + 3 x = 8.888194417 + 3 Combine like terms: 8.888194417 + 3 = 11.888194417 x = 11.888194417 Simplifying x = 11.888194417

Subproblem 2

x + -3 = -8.888194417 Simplifying x + -3 = -8.888194417 Reorder the terms: -3 + x = -8.888194417 Solving -3 + x = -8.888194417 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 = -8.888194417 + 3 Combine like terms: -3 + 3 = 0 0 + x = -8.888194417 + 3 x = -8.888194417 + 3 Combine like terms: -8.888194417 + 3 = -5.888194417 x = -5.888194417 Simplifying x = -5.888194417

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.888194417, -5.888194417}

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