3x^2-104.40x+896.28=0

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Solution for 3x^2-104.40x+896.28=0 equation:


Simplifying
3x2 + -104.40x + 896.28 = 0

Reorder the terms:
896.28 + -104.40x + 3x2 = 0

Solving
896.28 + -104.40x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
298.76 + -34.8x + x2 = 0

Move the constant term to the right:

Add '-298.76' to each side of the equation.
298.76 + -34.8x + -298.76 + x2 = 0 + -298.76

Reorder the terms:
298.76 + -298.76 + -34.8x + x2 = 0 + -298.76

Combine like terms: 298.76 + -298.76 = 0.00
0.00 + -34.8x + x2 = 0 + -298.76
-34.8x + x2 = 0 + -298.76

Combine like terms: 0 + -298.76 = -298.76
-34.8x + x2 = -298.76

The x term is -34.8x.  Take half its coefficient (-17.4).
Square it (302.76) and add it to both sides.

Add '302.76' to each side of the equation.
-34.8x + 302.76 + x2 = -298.76 + 302.76

Reorder the terms:
302.76 + -34.8x + x2 = -298.76 + 302.76

Combine like terms: -298.76 + 302.76 = 4
302.76 + -34.8x + x2 = 4

Factor a perfect square on the left side:
(x + -17.4)(x + -17.4) = 4

Calculate the square root of the right side: 2

Break this problem into two subproblems by setting 
(x + -17.4) equal to 2 and -2.

Subproblem 1

x + -17.4 = 2 Simplifying x + -17.4 = 2 Reorder the terms: -17.4 + x = 2 Solving -17.4 + x = 2 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '17.4' to each side of the equation. -17.4 + 17.4 + x = 2 + 17.4 Combine like terms: -17.4 + 17.4 = 0.0 0.0 + x = 2 + 17.4 x = 2 + 17.4 Combine like terms: 2 + 17.4 = 19.4 x = 19.4 Simplifying x = 19.4

Subproblem 2

x + -17.4 = -2 Simplifying x + -17.4 = -2 Reorder the terms: -17.4 + x = -2 Solving -17.4 + x = -2 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '17.4' to each side of the equation. -17.4 + 17.4 + x = -2 + 17.4 Combine like terms: -17.4 + 17.4 = 0.0 0.0 + x = -2 + 17.4 x = -2 + 17.4 Combine like terms: -2 + 17.4 = 15.4 x = 15.4 Simplifying x = 15.4

Solution

The solution to the problem is based on the solutions from the subproblems. x = {19.4, 15.4}

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