1.411760=4x^2+8x

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Solution for 1.411760=4x^2+8x equation:


Simplifying
1.411760 = 4x2 + 8x

Reorder the terms:
1.411760 = 8x + 4x2

Solving
1.411760 = 8x + 4x2

Solving for variable 'x'.

Reorder the terms:
1.411760 + -8x + -4x2 = 8x + -8x + 4x2 + -4x2

Combine like terms: 8x + -8x = 0
1.411760 + -8x + -4x2 = 0 + 4x2 + -4x2
1.411760 + -8x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
1.411760 + -8x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-0.35294 + 2x + x2 = 0

Move the constant term to the right:

Add '0.35294' to each side of the equation.
-0.35294 + 2x + 0.35294 + x2 = 0 + 0.35294

Reorder the terms:
-0.35294 + 0.35294 + 2x + x2 = 0 + 0.35294

Combine like terms: -0.35294 + 0.35294 = 0.00000
0.00000 + 2x + x2 = 0 + 0.35294
2x + x2 = 0 + 0.35294

Combine like terms: 0 + 0.35294 = 0.35294
2x + x2 = 0.35294

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 0.35294 + 1

Reorder the terms:
1 + 2x + x2 = 0.35294 + 1

Combine like terms: 0.35294 + 1 = 1.35294
1 + 2x + x2 = 1.35294

Factor a perfect square on the left side:
(x + 1)(x + 1) = 1.35294

Calculate the square root of the right side: 1.16315949

Break this problem into two subproblems by setting 
(x + 1) equal to 1.16315949 and -1.16315949.

Subproblem 1

x + 1 = 1.16315949 Simplifying x + 1 = 1.16315949 Reorder the terms: 1 + x = 1.16315949 Solving 1 + x = 1.16315949 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.16315949 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.16315949 + -1 x = 1.16315949 + -1 Combine like terms: 1.16315949 + -1 = 0.16315949 x = 0.16315949 Simplifying x = 0.16315949

Subproblem 2

x + 1 = -1.16315949 Simplifying x + 1 = -1.16315949 Reorder the terms: 1 + x = -1.16315949 Solving 1 + x = -1.16315949 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.16315949 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.16315949 + -1 x = -1.16315949 + -1 Combine like terms: -1.16315949 + -1 = -2.16315949 x = -2.16315949 Simplifying x = -2.16315949

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.16315949, -2.16315949}

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