9x^2-17x+4=0

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Solution for 9x^2-17x+4=0 equation:


Simplifying
9x2 + -17x + 4 = 0

Reorder the terms:
4 + -17x + 9x2 = 0

Solving
4 + -17x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
0.4444444444 + -1.888888889x + x2 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + -1.888888889x + -0.4444444444 + x2 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + -1.888888889x + x2 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + -1.888888889x + x2 = 0 + -0.4444444444
-1.888888889x + x2 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
-1.888888889x + x2 = -0.4444444444

The x term is -1.888888889x.  Take half its coefficient (-0.9444444445).
Square it (0.8919753087) and add it to both sides.

Add '0.8919753087' to each side of the equation.
-1.888888889x + 0.8919753087 + x2 = -0.4444444444 + 0.8919753087

Reorder the terms:
0.8919753087 + -1.888888889x + x2 = -0.4444444444 + 0.8919753087

Combine like terms: -0.4444444444 + 0.8919753087 = 0.4475308643
0.8919753087 + -1.888888889x + x2 = 0.4475308643

Factor a perfect square on the left side:
(x + -0.9444444445)(x + -0.9444444445) = 0.4475308643

Calculate the square root of the right side: 0.668977477

Break this problem into two subproblems by setting 
(x + -0.9444444445) equal to 0.668977477 and -0.668977477.

Subproblem 1

x + -0.9444444445 = 0.668977477 Simplifying x + -0.9444444445 = 0.668977477 Reorder the terms: -0.9444444445 + x = 0.668977477 Solving -0.9444444445 + x = 0.668977477 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9444444445' to each side of the equation. -0.9444444445 + 0.9444444445 + x = 0.668977477 + 0.9444444445 Combine like terms: -0.9444444445 + 0.9444444445 = 0.0000000000 0.0000000000 + x = 0.668977477 + 0.9444444445 x = 0.668977477 + 0.9444444445 Combine like terms: 0.668977477 + 0.9444444445 = 1.6134219215 x = 1.6134219215 Simplifying x = 1.6134219215

Subproblem 2

x + -0.9444444445 = -0.668977477 Simplifying x + -0.9444444445 = -0.668977477 Reorder the terms: -0.9444444445 + x = -0.668977477 Solving -0.9444444445 + x = -0.668977477 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9444444445' to each side of the equation. -0.9444444445 + 0.9444444445 + x = -0.668977477 + 0.9444444445 Combine like terms: -0.9444444445 + 0.9444444445 = 0.0000000000 0.0000000000 + x = -0.668977477 + 0.9444444445 x = -0.668977477 + 0.9444444445 Combine like terms: -0.668977477 + 0.9444444445 = 0.2754669675 x = 0.2754669675 Simplifying x = 0.2754669675

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.6134219215, 0.2754669675}

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