x^2-16x-35=0

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Solution for x^2-16x-35=0 equation:


Simplifying
x2 + -16x + -35 = 0

Reorder the terms:
-35 + -16x + x2 = 0

Solving
-35 + -16x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '35' to each side of the equation.
-35 + -16x + 35 + x2 = 0 + 35

Reorder the terms:
-35 + 35 + -16x + x2 = 0 + 35

Combine like terms: -35 + 35 = 0
0 + -16x + x2 = 0 + 35
-16x + x2 = 0 + 35

Combine like terms: 0 + 35 = 35
-16x + x2 = 35

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = 35 + 64

Reorder the terms:
64 + -16x + x2 = 35 + 64

Combine like terms: 35 + 64 = 99
64 + -16x + x2 = 99

Factor a perfect square on the left side:
(x + -8)(x + -8) = 99

Calculate the square root of the right side: 9.949874371

Break this problem into two subproblems by setting 
(x + -8) equal to 9.949874371 and -9.949874371.

Subproblem 1

x + -8 = 9.949874371 Simplifying x + -8 = 9.949874371 Reorder the terms: -8 + x = 9.949874371 Solving -8 + x = 9.949874371 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 9.949874371 + 8 Combine like terms: -8 + 8 = 0 0 + x = 9.949874371 + 8 x = 9.949874371 + 8 Combine like terms: 9.949874371 + 8 = 17.949874371 x = 17.949874371 Simplifying x = 17.949874371

Subproblem 2

x + -8 = -9.949874371 Simplifying x + -8 = -9.949874371 Reorder the terms: -8 + x = -9.949874371 Solving -8 + x = -9.949874371 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -9.949874371 + 8 Combine like terms: -8 + 8 = 0 0 + x = -9.949874371 + 8 x = -9.949874371 + 8 Combine like terms: -9.949874371 + 8 = -1.949874371 x = -1.949874371 Simplifying x = -1.949874371

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.949874371, -1.949874371}

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