0.04x^2+1.1x-2=0

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Solution for 0.04x^2+1.1x-2=0 equation:


Simplifying
0.04x2 + 1.1x + -2 = 0

Reorder the terms:
-2 + 1.1x + 0.04x2 = 0

Solving
-2 + 1.1x + 0.04x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.04'.
-50 + 27.5x + x2 = 0

Move the constant term to the right:

Add '50' to each side of the equation.
-50 + 27.5x + 50 + x2 = 0 + 50

Reorder the terms:
-50 + 50 + 27.5x + x2 = 0 + 50

Combine like terms: -50 + 50 = 0
0 + 27.5x + x2 = 0 + 50
27.5x + x2 = 0 + 50

Combine like terms: 0 + 50 = 50
27.5x + x2 = 50

The x term is 27.5x.  Take half its coefficient (13.75).
Square it (189.0625) and add it to both sides.

Add '189.0625' to each side of the equation.
27.5x + 189.0625 + x2 = 50 + 189.0625

Reorder the terms:
189.0625 + 27.5x + x2 = 50 + 189.0625

Combine like terms: 50 + 189.0625 = 239.0625
189.0625 + 27.5x + x2 = 239.0625

Factor a perfect square on the left side:
(x + 13.75)(x + 13.75) = 239.0625

Calculate the square root of the right side: 15.461646096

Break this problem into two subproblems by setting 
(x + 13.75) equal to 15.461646096 and -15.461646096.

Subproblem 1

x + 13.75 = 15.461646096 Simplifying x + 13.75 = 15.461646096 Reorder the terms: 13.75 + x = 15.461646096 Solving 13.75 + x = 15.461646096 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13.75' to each side of the equation. 13.75 + -13.75 + x = 15.461646096 + -13.75 Combine like terms: 13.75 + -13.75 = 0.00 0.00 + x = 15.461646096 + -13.75 x = 15.461646096 + -13.75 Combine like terms: 15.461646096 + -13.75 = 1.711646096 x = 1.711646096 Simplifying x = 1.711646096

Subproblem 2

x + 13.75 = -15.461646096 Simplifying x + 13.75 = -15.461646096 Reorder the terms: 13.75 + x = -15.461646096 Solving 13.75 + x = -15.461646096 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13.75' to each side of the equation. 13.75 + -13.75 + x = -15.461646096 + -13.75 Combine like terms: 13.75 + -13.75 = 0.00 0.00 + x = -15.461646096 + -13.75 x = -15.461646096 + -13.75 Combine like terms: -15.461646096 + -13.75 = -29.211646096 x = -29.211646096 Simplifying x = -29.211646096

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.711646096, -29.211646096}

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