x^2+16x=35

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Solution for x^2+16x=35 equation:


Simplifying
x2 + 16x = 35

Reorder the terms:
16x + x2 = 35

Solving
16x + x2 = 35

Solving for variable 'x'.

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

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

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 = 1.949874371 x = 1.949874371 Simplifying x = 1.949874371

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 = -17.949874371 x = -17.949874371 Simplifying x = -17.949874371

Solution

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

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