0.55078=0.0079x^2-0.0534x

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Solution for 0.55078=0.0079x^2-0.0534x equation:


Simplifying
0.55078 = 0.0079x2 + -0.0534x

Reorder the terms:
0.55078 = -0.0534x + 0.0079x2

Solving
0.55078 = -0.0534x + 0.0079x2

Solving for variable 'x'.

Reorder the terms:
0.55078 + 0.0534x + -0.0079x2 = -0.0534x + 0.0534x + 0.0079x2 + -0.0079x2

Combine like terms: -0.0534x + 0.0534x = 0.0000
0.55078 + 0.0534x + -0.0079x2 = 0.0000 + 0.0079x2 + -0.0079x2
0.55078 + 0.0534x + -0.0079x2 = 0.0079x2 + -0.0079x2

Combine like terms: 0.0079x2 + -0.0079x2 = 0.0000
0.55078 + 0.0534x + -0.0079x2 = 0.0000

Begin completing the square.  Divide all terms by
-0.0079 the coefficient of the squared term: 

Divide each side by '-0.0079'.
-69.71898734 + -6.759493671x + x2 = 0

Move the constant term to the right:

Add '69.71898734' to each side of the equation.
-69.71898734 + -6.759493671x + 69.71898734 + x2 = 0 + 69.71898734

Reorder the terms:
-69.71898734 + 69.71898734 + -6.759493671x + x2 = 0 + 69.71898734

Combine like terms: -69.71898734 + 69.71898734 = 0.00000000
0.00000000 + -6.759493671x + x2 = 0 + 69.71898734
-6.759493671x + x2 = 0 + 69.71898734

Combine like terms: 0 + 69.71898734 = 69.71898734
-6.759493671x + x2 = 69.71898734

The x term is -6.759493671x.  Take half its coefficient (-3.379746836).
Square it (11.42268868) and add it to both sides.

Add '11.42268868' to each side of the equation.
-6.759493671x + 11.42268868 + x2 = 69.71898734 + 11.42268868

Reorder the terms:
11.42268868 + -6.759493671x + x2 = 69.71898734 + 11.42268868

Combine like terms: 69.71898734 + 11.42268868 = 81.14167602
11.42268868 + -6.759493671x + x2 = 81.14167602

Factor a perfect square on the left side:
(x + -3.379746836)(x + -3.379746836) = 81.14167602

Calculate the square root of the right side: 9.007867451

Break this problem into two subproblems by setting 
(x + -3.379746836) equal to 9.007867451 and -9.007867451.

Subproblem 1

x + -3.379746836 = 9.007867451 Simplifying x + -3.379746836 = 9.007867451 Reorder the terms: -3.379746836 + x = 9.007867451 Solving -3.379746836 + x = 9.007867451 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.379746836' to each side of the equation. -3.379746836 + 3.379746836 + x = 9.007867451 + 3.379746836 Combine like terms: -3.379746836 + 3.379746836 = 0.000000000 0.000000000 + x = 9.007867451 + 3.379746836 x = 9.007867451 + 3.379746836 Combine like terms: 9.007867451 + 3.379746836 = 12.387614287 x = 12.387614287 Simplifying x = 12.387614287

Subproblem 2

x + -3.379746836 = -9.007867451 Simplifying x + -3.379746836 = -9.007867451 Reorder the terms: -3.379746836 + x = -9.007867451 Solving -3.379746836 + x = -9.007867451 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.379746836' to each side of the equation. -3.379746836 + 3.379746836 + x = -9.007867451 + 3.379746836 Combine like terms: -3.379746836 + 3.379746836 = 0.000000000 0.000000000 + x = -9.007867451 + 3.379746836 x = -9.007867451 + 3.379746836 Combine like terms: -9.007867451 + 3.379746836 = -5.628120615 x = -5.628120615 Simplifying x = -5.628120615

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.387614287, -5.628120615}

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