-1.615x^2+38.059x-158.947=0

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Solution for -1.615x^2+38.059x-158.947=0 equation:


Simplifying
-1.615x2 + 38.059x + -158.947 = 0

Reorder the terms:
-158.947 + 38.059x + -1.615x2 = 0

Solving
-158.947 + 38.059x + -1.615x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1.615 the coefficient of the squared term: 

Divide each side by '-1.615'.
98.41919505 + -23.56594427x + x2 = 0

Move the constant term to the right:

Add '-98.41919505' to each side of the equation.
98.41919505 + -23.56594427x + -98.41919505 + x2 = 0 + -98.41919505

Reorder the terms:
98.41919505 + -98.41919505 + -23.56594427x + x2 = 0 + -98.41919505

Combine like terms: 98.41919505 + -98.41919505 = 0.00000000
0.00000000 + -23.56594427x + x2 = 0 + -98.41919505
-23.56594427x + x2 = 0 + -98.41919505

Combine like terms: 0 + -98.41919505 = -98.41919505
-23.56594427x + x2 = -98.41919505

The x term is -23.56594427x.  Take half its coefficient (-11.78297214).
Square it (138.8384325) and add it to both sides.

Add '138.8384325' to each side of the equation.
-23.56594427x + 138.8384325 + x2 = -98.41919505 + 138.8384325

Reorder the terms:
138.8384325 + -23.56594427x + x2 = -98.41919505 + 138.8384325

Combine like terms: -98.41919505 + 138.8384325 = 40.41923745
138.8384325 + -23.56594427x + x2 = 40.41923745

Factor a perfect square on the left side:
(x + -11.78297214)(x + -11.78297214) = 40.41923745

Calculate the square root of the right side: 6.357612559

Break this problem into two subproblems by setting 
(x + -11.78297214) equal to 6.357612559 and -6.357612559.

Subproblem 1

x + -11.78297214 = 6.357612559 Simplifying x + -11.78297214 = 6.357612559 Reorder the terms: -11.78297214 + x = 6.357612559 Solving -11.78297214 + x = 6.357612559 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.78297214' to each side of the equation. -11.78297214 + 11.78297214 + x = 6.357612559 + 11.78297214 Combine like terms: -11.78297214 + 11.78297214 = 0.00000000 0.00000000 + x = 6.357612559 + 11.78297214 x = 6.357612559 + 11.78297214 Combine like terms: 6.357612559 + 11.78297214 = 18.140584699 x = 18.140584699 Simplifying x = 18.140584699

Subproblem 2

x + -11.78297214 = -6.357612559 Simplifying x + -11.78297214 = -6.357612559 Reorder the terms: -11.78297214 + x = -6.357612559 Solving -11.78297214 + x = -6.357612559 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.78297214' to each side of the equation. -11.78297214 + 11.78297214 + x = -6.357612559 + 11.78297214 Combine like terms: -11.78297214 + 11.78297214 = 0.00000000 0.00000000 + x = -6.357612559 + 11.78297214 x = -6.357612559 + 11.78297214 Combine like terms: -6.357612559 + 11.78297214 = 5.425359581 x = 5.425359581 Simplifying x = 5.425359581

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.140584699, 5.425359581}

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