x^2-8x-94=0

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Solution for x^2-8x-94=0 equation:


Simplifying
x2 + -8x + -94 = 0

Reorder the terms:
-94 + -8x + x2 = 0

Solving
-94 + -8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '94' to each side of the equation.
-94 + -8x + 94 + x2 = 0 + 94

Reorder the terms:
-94 + 94 + -8x + x2 = 0 + 94

Combine like terms: -94 + 94 = 0
0 + -8x + x2 = 0 + 94
-8x + x2 = 0 + 94

Combine like terms: 0 + 94 = 94
-8x + x2 = 94

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 94 + 16

Reorder the terms:
16 + -8x + x2 = 94 + 16

Combine like terms: 94 + 16 = 110
16 + -8x + x2 = 110

Factor a perfect square on the left side:
(x + -4)(x + -4) = 110

Calculate the square root of the right side: 10.488088482

Break this problem into two subproblems by setting 
(x + -4) equal to 10.488088482 and -10.488088482.

Subproblem 1

x + -4 = 10.488088482 Simplifying x + -4 = 10.488088482 Reorder the terms: -4 + x = 10.488088482 Solving -4 + x = 10.488088482 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 10.488088482 + 4 Combine like terms: -4 + 4 = 0 0 + x = 10.488088482 + 4 x = 10.488088482 + 4 Combine like terms: 10.488088482 + 4 = 14.488088482 x = 14.488088482 Simplifying x = 14.488088482

Subproblem 2

x + -4 = -10.488088482 Simplifying x + -4 = -10.488088482 Reorder the terms: -4 + x = -10.488088482 Solving -4 + x = -10.488088482 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -10.488088482 + 4 Combine like terms: -4 + 4 = 0 0 + x = -10.488088482 + 4 x = -10.488088482 + 4 Combine like terms: -10.488088482 + 4 = -6.488088482 x = -6.488088482 Simplifying x = -6.488088482

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.488088482, -6.488088482}

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