10x^2-x-1.1=0

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Solution for 10x^2-x-1.1=0 equation:


Simplifying
10x2 + -1x + -1.1 = 0

Reorder the terms:
-1.1 + -1x + 10x2 = 0

Solving
-1.1 + -1x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-0.11 + -0.1x + x2 = 0

Move the constant term to the right:

Add '0.11' to each side of the equation.
-0.11 + -0.1x + 0.11 + x2 = 0 + 0.11

Reorder the terms:
-0.11 + 0.11 + -0.1x + x2 = 0 + 0.11

Combine like terms: -0.11 + 0.11 = 0.00
0.00 + -0.1x + x2 = 0 + 0.11
-0.1x + x2 = 0 + 0.11

Combine like terms: 0 + 0.11 = 0.11
-0.1x + x2 = 0.11

The x term is -0.1x.  Take half its coefficient (-0.05).
Square it (0.0025) and add it to both sides.

Add '0.0025' to each side of the equation.
-0.1x + 0.0025 + x2 = 0.11 + 0.0025

Reorder the terms:
0.0025 + -0.1x + x2 = 0.11 + 0.0025

Combine like terms: 0.11 + 0.0025 = 0.1125
0.0025 + -0.1x + x2 = 0.1125

Factor a perfect square on the left side:
(x + -0.05)(x + -0.05) = 0.1125

Calculate the square root of the right side: 0.335410197

Break this problem into two subproblems by setting 
(x + -0.05) equal to 0.335410197 and -0.335410197.

Subproblem 1

x + -0.05 = 0.335410197 Simplifying x + -0.05 = 0.335410197 Reorder the terms: -0.05 + x = 0.335410197 Solving -0.05 + x = 0.335410197 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05' to each side of the equation. -0.05 + 0.05 + x = 0.335410197 + 0.05 Combine like terms: -0.05 + 0.05 = 0.00 0.00 + x = 0.335410197 + 0.05 x = 0.335410197 + 0.05 Combine like terms: 0.335410197 + 0.05 = 0.385410197 x = 0.385410197 Simplifying x = 0.385410197

Subproblem 2

x + -0.05 = -0.335410197 Simplifying x + -0.05 = -0.335410197 Reorder the terms: -0.05 + x = -0.335410197 Solving -0.05 + x = -0.335410197 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05' to each side of the equation. -0.05 + 0.05 + x = -0.335410197 + 0.05 Combine like terms: -0.05 + 0.05 = 0.00 0.00 + x = -0.335410197 + 0.05 x = -0.335410197 + 0.05 Combine like terms: -0.335410197 + 0.05 = -0.285410197 x = -0.285410197 Simplifying x = -0.285410197

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.385410197, -0.285410197}

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