2x^2+16x=1

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Solution for 2x^2+16x=1 equation:


Simplifying
2x2 + 16x = 1

Reorder the terms:
16x + 2x2 = 1

Solving
16x + 2x2 = 1

Solving for variable 'x'.

Reorder the terms:
-1 + 16x + 2x2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + 16x + 2x2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-0.5 + 8x + x2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + 8x + 0.5 + x2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + 8x + x2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 8x + x2 = 0 + 0.5
8x + x2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
8x + x2 = 0.5

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 = 0.5 + 16

Reorder the terms:
16 + 8x + x2 = 0.5 + 16

Combine like terms: 0.5 + 16 = 16.5
16 + 8x + x2 = 16.5

Factor a perfect square on the left side:
(x + 4)(x + 4) = 16.5

Calculate the square root of the right side: 4.062019202

Break this problem into two subproblems by setting 
(x + 4) equal to 4.062019202 and -4.062019202.

Subproblem 1

x + 4 = 4.062019202 Simplifying x + 4 = 4.062019202 Reorder the terms: 4 + x = 4.062019202 Solving 4 + x = 4.062019202 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 = 4.062019202 + -4 Combine like terms: 4 + -4 = 0 0 + x = 4.062019202 + -4 x = 4.062019202 + -4 Combine like terms: 4.062019202 + -4 = 0.062019202 x = 0.062019202 Simplifying x = 0.062019202

Subproblem 2

x + 4 = -4.062019202 Simplifying x + 4 = -4.062019202 Reorder the terms: 4 + x = -4.062019202 Solving 4 + x = -4.062019202 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 = -4.062019202 + -4 Combine like terms: 4 + -4 = 0 0 + x = -4.062019202 + -4 x = -4.062019202 + -4 Combine like terms: -4.062019202 + -4 = -8.062019202 x = -8.062019202 Simplifying x = -8.062019202

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.062019202, -8.062019202}

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