2x^2-6x=1+.25x^2

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Solution for 2x^2-6x=1+.25x^2 equation:


Simplifying
2x2 + -6x = 1 + 0.25x2

Reorder the terms:
-6x + 2x2 = 1 + 0.25x2

Solving
-6x + 2x2 = 1 + 0.25x2

Solving for variable 'x'.

Reorder the terms:
-1 + -6x + 2x2 + -0.25x2 = 1 + 0.25x2 + -1 + -0.25x2

Combine like terms: 2x2 + -0.25x2 = 1.75x2
-1 + -6x + 1.75x2 = 1 + 0.25x2 + -1 + -0.25x2

Reorder the terms:
-1 + -6x + 1.75x2 = 1 + -1 + 0.25x2 + -0.25x2

Combine like terms: 1 + -1 = 0
-1 + -6x + 1.75x2 = 0 + 0.25x2 + -0.25x2
-1 + -6x + 1.75x2 = 0.25x2 + -0.25x2

Combine like terms: 0.25x2 + -0.25x2 = 0.00
-1 + -6x + 1.75x2 = 0.00

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

Divide each side by '1.75'.
-0.5714285714 + -3.428571429x + x2 = 0

Move the constant term to the right:

Add '0.5714285714' to each side of the equation.
-0.5714285714 + -3.428571429x + 0.5714285714 + x2 = 0 + 0.5714285714

Reorder the terms:
-0.5714285714 + 0.5714285714 + -3.428571429x + x2 = 0 + 0.5714285714

Combine like terms: -0.5714285714 + 0.5714285714 = 0.0000000000
0.0000000000 + -3.428571429x + x2 = 0 + 0.5714285714
-3.428571429x + x2 = 0 + 0.5714285714

Combine like terms: 0 + 0.5714285714 = 0.5714285714
-3.428571429x + x2 = 0.5714285714

The x term is -3.428571429x.  Take half its coefficient (-1.714285715).
Square it (2.938775513) and add it to both sides.

Add '2.938775513' to each side of the equation.
-3.428571429x + 2.938775513 + x2 = 0.5714285714 + 2.938775513

Reorder the terms:
2.938775513 + -3.428571429x + x2 = 0.5714285714 + 2.938775513

Combine like terms: 0.5714285714 + 2.938775513 = 3.5102040844
2.938775513 + -3.428571429x + x2 = 3.5102040844

Factor a perfect square on the left side:
(x + -1.714285715)(x + -1.714285715) = 3.5102040844

Calculate the square root of the right side: 1.873553865

Break this problem into two subproblems by setting 
(x + -1.714285715) equal to 1.873553865 and -1.873553865.

Subproblem 1

x + -1.714285715 = 1.873553865 Simplifying x + -1.714285715 = 1.873553865 Reorder the terms: -1.714285715 + x = 1.873553865 Solving -1.714285715 + x = 1.873553865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.714285715' to each side of the equation. -1.714285715 + 1.714285715 + x = 1.873553865 + 1.714285715 Combine like terms: -1.714285715 + 1.714285715 = 0.000000000 0.000000000 + x = 1.873553865 + 1.714285715 x = 1.873553865 + 1.714285715 Combine like terms: 1.873553865 + 1.714285715 = 3.58783958 x = 3.58783958 Simplifying x = 3.58783958

Subproblem 2

x + -1.714285715 = -1.873553865 Simplifying x + -1.714285715 = -1.873553865 Reorder the terms: -1.714285715 + x = -1.873553865 Solving -1.714285715 + x = -1.873553865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.714285715' to each side of the equation. -1.714285715 + 1.714285715 + x = -1.873553865 + 1.714285715 Combine like terms: -1.714285715 + 1.714285715 = 0.000000000 0.000000000 + x = -1.873553865 + 1.714285715 x = -1.873553865 + 1.714285715 Combine like terms: -1.873553865 + 1.714285715 = -0.15926815 x = -0.15926815 Simplifying x = -0.15926815

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.58783958, -0.15926815}

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