x^2+6x-70=0

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Solution for x^2+6x-70=0 equation:


Simplifying
x2 + 6x + -70 = 0

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

Solving
-70 + 6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

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 = 5.888194417 x = 5.888194417 Simplifying x = 5.888194417

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 = -11.888194417 x = -11.888194417 Simplifying x = -11.888194417

Solution

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

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