412=.054x^2+1.1x

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Solution for 412=.054x^2+1.1x equation:


Simplifying
412 = 0.054x2 + 1.1x

Reorder the terms:
412 = 1.1x + 0.054x2

Solving
412 = 1.1x + 0.054x2

Solving for variable 'x'.

Reorder the terms:
412 + -1.1x + -0.054x2 = 1.1x + -1.1x + 0.054x2 + -0.054x2

Combine like terms: 1.1x + -1.1x = 0.0
412 + -1.1x + -0.054x2 = 0.0 + 0.054x2 + -0.054x2
412 + -1.1x + -0.054x2 = 0.054x2 + -0.054x2

Combine like terms: 0.054x2 + -0.054x2 = 0.000
412 + -1.1x + -0.054x2 = 0.000

Begin completing the square.  Divide all terms by
-0.054 the coefficient of the squared term: 

Divide each side by '-0.054'.
-7629.62963 + 20.37037037x + x2 = 0

Move the constant term to the right:

Add '7629.62963' to each side of the equation.
-7629.62963 + 20.37037037x + 7629.62963 + x2 = 0 + 7629.62963

Reorder the terms:
-7629.62963 + 7629.62963 + 20.37037037x + x2 = 0 + 7629.62963

Combine like terms: -7629.62963 + 7629.62963 = 0.00000
0.00000 + 20.37037037x + x2 = 0 + 7629.62963
20.37037037x + x2 = 0 + 7629.62963

Combine like terms: 0 + 7629.62963 = 7629.62963
20.37037037x + x2 = 7629.62963

The x term is 20.37037037x.  Take half its coefficient (10.18518519).
Square it (103.7379974) and add it to both sides.

Add '103.7379974' to each side of the equation.
20.37037037x + 103.7379974 + x2 = 7629.62963 + 103.7379974

Reorder the terms:
103.7379974 + 20.37037037x + x2 = 7629.62963 + 103.7379974

Combine like terms: 7629.62963 + 103.7379974 = 7733.3676274
103.7379974 + 20.37037037x + x2 = 7733.3676274

Factor a perfect square on the left side:
(x + 10.18518519)(x + 10.18518519) = 7733.3676274

Calculate the square root of the right side: 87.939568042

Break this problem into two subproblems by setting 
(x + 10.18518519) equal to 87.939568042 and -87.939568042.

Subproblem 1

x + 10.18518519 = 87.939568042 Simplifying x + 10.18518519 = 87.939568042 Reorder the terms: 10.18518519 + x = 87.939568042 Solving 10.18518519 + x = 87.939568042 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10.18518519' to each side of the equation. 10.18518519 + -10.18518519 + x = 87.939568042 + -10.18518519 Combine like terms: 10.18518519 + -10.18518519 = 0.00000000 0.00000000 + x = 87.939568042 + -10.18518519 x = 87.939568042 + -10.18518519 Combine like terms: 87.939568042 + -10.18518519 = 77.754382852 x = 77.754382852 Simplifying x = 77.754382852

Subproblem 2

x + 10.18518519 = -87.939568042 Simplifying x + 10.18518519 = -87.939568042 Reorder the terms: 10.18518519 + x = -87.939568042 Solving 10.18518519 + x = -87.939568042 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10.18518519' to each side of the equation. 10.18518519 + -10.18518519 + x = -87.939568042 + -10.18518519 Combine like terms: 10.18518519 + -10.18518519 = 0.00000000 0.00000000 + x = -87.939568042 + -10.18518519 x = -87.939568042 + -10.18518519 Combine like terms: -87.939568042 + -10.18518519 = -98.124753232 x = -98.124753232 Simplifying x = -98.124753232

Solution

The solution to the problem is based on the solutions from the subproblems. x = {77.754382852, -98.124753232}

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