19.5*x^2-349*x+1156=0

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Solution for 19.5*x^2-349*x+1156=0 equation:


Simplifying
19.5x2 + -349x + 1156 = 0

Reorder the terms:
1156 + -349x + 19.5x2 = 0

Solving
1156 + -349x + 19.5x2 = 0

Solving for variable 'x'.

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

Divide each side by '19.5'.
59.28205128 + -17.8974359x + x2 = 0

Move the constant term to the right:

Add '-59.28205128' to each side of the equation.
59.28205128 + -17.8974359x + -59.28205128 + x2 = 0 + -59.28205128

Reorder the terms:
59.28205128 + -59.28205128 + -17.8974359x + x2 = 0 + -59.28205128

Combine like terms: 59.28205128 + -59.28205128 = 0.00000000
0.00000000 + -17.8974359x + x2 = 0 + -59.28205128
-17.8974359x + x2 = 0 + -59.28205128

Combine like terms: 0 + -59.28205128 = -59.28205128
-17.8974359x + x2 = -59.28205128

The x term is -17.8974359x.  Take half its coefficient (-8.94871795).
Square it (80.07955295) and add it to both sides.

Add '80.07955295' to each side of the equation.
-17.8974359x + 80.07955295 + x2 = -59.28205128 + 80.07955295

Reorder the terms:
80.07955295 + -17.8974359x + x2 = -59.28205128 + 80.07955295

Combine like terms: -59.28205128 + 80.07955295 = 20.79750167
80.07955295 + -17.8974359x + x2 = 20.79750167

Factor a perfect square on the left side:
(x + -8.94871795)(x + -8.94871795) = 20.79750167

Calculate the square root of the right side: 4.560427795

Break this problem into two subproblems by setting 
(x + -8.94871795) equal to 4.560427795 and -4.560427795.

Subproblem 1

x + -8.94871795 = 4.560427795 Simplifying x + -8.94871795 = 4.560427795 Reorder the terms: -8.94871795 + x = 4.560427795 Solving -8.94871795 + x = 4.560427795 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.94871795' to each side of the equation. -8.94871795 + 8.94871795 + x = 4.560427795 + 8.94871795 Combine like terms: -8.94871795 + 8.94871795 = 0.00000000 0.00000000 + x = 4.560427795 + 8.94871795 x = 4.560427795 + 8.94871795 Combine like terms: 4.560427795 + 8.94871795 = 13.509145745 x = 13.509145745 Simplifying x = 13.509145745

Subproblem 2

x + -8.94871795 = -4.560427795 Simplifying x + -8.94871795 = -4.560427795 Reorder the terms: -8.94871795 + x = -4.560427795 Solving -8.94871795 + x = -4.560427795 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.94871795' to each side of the equation. -8.94871795 + 8.94871795 + x = -4.560427795 + 8.94871795 Combine like terms: -8.94871795 + 8.94871795 = 0.00000000 0.00000000 + x = -4.560427795 + 8.94871795 x = -4.560427795 + 8.94871795 Combine like terms: -4.560427795 + 8.94871795 = 4.388290155 x = 4.388290155 Simplifying x = 4.388290155

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.509145745, 4.388290155}

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