8x^2-3x=17x-3

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Solution for 8x^2-3x=17x-3 equation:


Simplifying
8x2 + -3x = 17x + -3

Reorder the terms:
-3x + 8x2 = 17x + -3

Reorder the terms:
-3x + 8x2 = -3 + 17x

Solving
-3x + 8x2 = -3 + 17x

Solving for variable 'x'.

Reorder the terms:
3 + -3x + -17x + 8x2 = -3 + 17x + 3 + -17x

Combine like terms: -3x + -17x = -20x
3 + -20x + 8x2 = -3 + 17x + 3 + -17x

Reorder the terms:
3 + -20x + 8x2 = -3 + 3 + 17x + -17x

Combine like terms: -3 + 3 = 0
3 + -20x + 8x2 = 0 + 17x + -17x
3 + -20x + 8x2 = 17x + -17x

Combine like terms: 17x + -17x = 0
3 + -20x + 8x2 = 0

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

Divide each side by '8'.
0.375 + -2.5x + x2 = 0

Move the constant term to the right:

Add '-0.375' to each side of the equation.
0.375 + -2.5x + -0.375 + x2 = 0 + -0.375

Reorder the terms:
0.375 + -0.375 + -2.5x + x2 = 0 + -0.375

Combine like terms: 0.375 + -0.375 = 0.000
0.000 + -2.5x + x2 = 0 + -0.375
-2.5x + x2 = 0 + -0.375

Combine like terms: 0 + -0.375 = -0.375
-2.5x + x2 = -0.375

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = -0.375 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -0.375 + 1.5625

Combine like terms: -0.375 + 1.5625 = 1.1875
1.5625 + -2.5x + x2 = 1.1875

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 1.1875

Calculate the square root of the right side: 1.089724736

Break this problem into two subproblems by setting 
(x + -1.25) equal to 1.089724736 and -1.089724736.

Subproblem 1

x + -1.25 = 1.089724736 Simplifying x + -1.25 = 1.089724736 Reorder the terms: -1.25 + x = 1.089724736 Solving -1.25 + x = 1.089724736 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 1.089724736 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 1.089724736 + 1.25 x = 1.089724736 + 1.25 Combine like terms: 1.089724736 + 1.25 = 2.339724736 x = 2.339724736 Simplifying x = 2.339724736

Subproblem 2

x + -1.25 = -1.089724736 Simplifying x + -1.25 = -1.089724736 Reorder the terms: -1.25 + x = -1.089724736 Solving -1.25 + x = -1.089724736 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -1.089724736 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -1.089724736 + 1.25 x = -1.089724736 + 1.25 Combine like terms: -1.089724736 + 1.25 = 0.160275264 x = 0.160275264 Simplifying x = 0.160275264

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.339724736, 0.160275264}

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