-1-10x=3-x-5x^2

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Solution for -1-10x=3-x-5x^2 equation:


Simplifying
-1 + -10x = 3 + -1x + -5x2

Solving
-1 + -10x = 3 + -1x + -5x2

Solving for variable 'x'.

Reorder the terms:
-1 + -3 + -10x + x + 5x2 = 3 + -1x + -5x2 + -3 + x + 5x2

Combine like terms: -1 + -3 = -4
-4 + -10x + x + 5x2 = 3 + -1x + -5x2 + -3 + x + 5x2

Combine like terms: -10x + x = -9x
-4 + -9x + 5x2 = 3 + -1x + -5x2 + -3 + x + 5x2

Reorder the terms:
-4 + -9x + 5x2 = 3 + -3 + -1x + x + -5x2 + 5x2

Combine like terms: 3 + -3 = 0
-4 + -9x + 5x2 = 0 + -1x + x + -5x2 + 5x2
-4 + -9x + 5x2 = -1x + x + -5x2 + 5x2

Combine like terms: -1x + x = 0
-4 + -9x + 5x2 = 0 + -5x2 + 5x2
-4 + -9x + 5x2 = -5x2 + 5x2

Combine like terms: -5x2 + 5x2 = 0
-4 + -9x + 5x2 = 0

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

Divide each side by '5'.
-0.8 + -1.8x + x2 = 0

Move the constant term to the right:

Add '0.8' to each side of the equation.
-0.8 + -1.8x + 0.8 + x2 = 0 + 0.8

Reorder the terms:
-0.8 + 0.8 + -1.8x + x2 = 0 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + -1.8x + x2 = 0 + 0.8
-1.8x + x2 = 0 + 0.8

Combine like terms: 0 + 0.8 = 0.8
-1.8x + x2 = 0.8

The x term is -1.8x.  Take half its coefficient (-0.9).
Square it (0.81) and add it to both sides.

Add '0.81' to each side of the equation.
-1.8x + 0.81 + x2 = 0.8 + 0.81

Reorder the terms:
0.81 + -1.8x + x2 = 0.8 + 0.81

Combine like terms: 0.8 + 0.81 = 1.61
0.81 + -1.8x + x2 = 1.61

Factor a perfect square on the left side:
(x + -0.9)(x + -0.9) = 1.61

Calculate the square root of the right side: 1.268857754

Break this problem into two subproblems by setting 
(x + -0.9) equal to 1.268857754 and -1.268857754.

Subproblem 1

x + -0.9 = 1.268857754 Simplifying x + -0.9 = 1.268857754 Reorder the terms: -0.9 + x = 1.268857754 Solving -0.9 + x = 1.268857754 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + x = 1.268857754 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + x = 1.268857754 + 0.9 x = 1.268857754 + 0.9 Combine like terms: 1.268857754 + 0.9 = 2.168857754 x = 2.168857754 Simplifying x = 2.168857754

Subproblem 2

x + -0.9 = -1.268857754 Simplifying x + -0.9 = -1.268857754 Reorder the terms: -0.9 + x = -1.268857754 Solving -0.9 + x = -1.268857754 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + x = -1.268857754 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + x = -1.268857754 + 0.9 x = -1.268857754 + 0.9 Combine like terms: -1.268857754 + 0.9 = -0.368857754 x = -0.368857754 Simplifying x = -0.368857754

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.168857754, -0.368857754}

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