x^2+16x-224=0

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Solution for x^2+16x-224=0 equation:


Simplifying
x2 + 16x + -224 = 0

Reorder the terms:
-224 + 16x + x2 = 0

Solving
-224 + 16x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '224' to each side of the equation.
-224 + 16x + 224 + x2 = 0 + 224

Reorder the terms:
-224 + 224 + 16x + x2 = 0 + 224

Combine like terms: -224 + 224 = 0
0 + 16x + x2 = 0 + 224
16x + x2 = 0 + 224

Combine like terms: 0 + 224 = 224
16x + x2 = 224

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 = 224 + 64

Reorder the terms:
64 + 16x + x2 = 224 + 64

Combine like terms: 224 + 64 = 288
64 + 16x + x2 = 288

Factor a perfect square on the left side:
(x + 8)(x + 8) = 288

Calculate the square root of the right side: 16.970562748

Break this problem into two subproblems by setting 
(x + 8) equal to 16.970562748 and -16.970562748.

Subproblem 1

x + 8 = 16.970562748 Simplifying x + 8 = 16.970562748 Reorder the terms: 8 + x = 16.970562748 Solving 8 + x = 16.970562748 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 = 16.970562748 + -8 Combine like terms: 8 + -8 = 0 0 + x = 16.970562748 + -8 x = 16.970562748 + -8 Combine like terms: 16.970562748 + -8 = 8.970562748 x = 8.970562748 Simplifying x = 8.970562748

Subproblem 2

x + 8 = -16.970562748 Simplifying x + 8 = -16.970562748 Reorder the terms: 8 + x = -16.970562748 Solving 8 + x = -16.970562748 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 = -16.970562748 + -8 Combine like terms: 8 + -8 = 0 0 + x = -16.970562748 + -8 x = -16.970562748 + -8 Combine like terms: -16.970562748 + -8 = -24.970562748 x = -24.970562748 Simplifying x = -24.970562748

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.970562748, -24.970562748}

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