x^2+16x-67=0

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Solution for x^2+16x-67=0 equation:


Simplifying
x2 + 16x + -67 = 0

Reorder the terms:
-67 + 16x + x2 = 0

Solving
-67 + 16x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '67' to each side of the equation.
-67 + 16x + 67 + x2 = 0 + 67

Reorder the terms:
-67 + 67 + 16x + x2 = 0 + 67

Combine like terms: -67 + 67 = 0
0 + 16x + x2 = 0 + 67
16x + x2 = 0 + 67

Combine like terms: 0 + 67 = 67
16x + x2 = 67

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 = 67 + 64

Reorder the terms:
64 + 16x + x2 = 67 + 64

Combine like terms: 67 + 64 = 131
64 + 16x + x2 = 131

Factor a perfect square on the left side:
(x + 8)(x + 8) = 131

Calculate the square root of the right side: 11.445523142

Break this problem into two subproblems by setting 
(x + 8) equal to 11.445523142 and -11.445523142.

Subproblem 1

x + 8 = 11.445523142 Simplifying x + 8 = 11.445523142 Reorder the terms: 8 + x = 11.445523142 Solving 8 + x = 11.445523142 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 = 11.445523142 + -8 Combine like terms: 8 + -8 = 0 0 + x = 11.445523142 + -8 x = 11.445523142 + -8 Combine like terms: 11.445523142 + -8 = 3.445523142 x = 3.445523142 Simplifying x = 3.445523142

Subproblem 2

x + 8 = -11.445523142 Simplifying x + 8 = -11.445523142 Reorder the terms: 8 + x = -11.445523142 Solving 8 + x = -11.445523142 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 = -11.445523142 + -8 Combine like terms: 8 + -8 = 0 0 + x = -11.445523142 + -8 x = -11.445523142 + -8 Combine like terms: -11.445523142 + -8 = -19.445523142 x = -19.445523142 Simplifying x = -19.445523142

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.445523142, -19.445523142}

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