8x^2-35x+35=0

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Solution for 8x^2-35x+35=0 equation:


Simplifying
8x2 + -35x + 35 = 0

Reorder the terms:
35 + -35x + 8x2 = 0

Solving
35 + -35x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
4.375 + -4.375x + x2 = 0

Move the constant term to the right:

Add '-4.375' to each side of the equation.
4.375 + -4.375x + -4.375 + x2 = 0 + -4.375

Reorder the terms:
4.375 + -4.375 + -4.375x + x2 = 0 + -4.375

Combine like terms: 4.375 + -4.375 = 0.000
0.000 + -4.375x + x2 = 0 + -4.375
-4.375x + x2 = 0 + -4.375

Combine like terms: 0 + -4.375 = -4.375
-4.375x + x2 = -4.375

The x term is -4.375x.  Take half its coefficient (-2.1875).
Square it (4.78515625) and add it to both sides.

Add '4.78515625' to each side of the equation.
-4.375x + 4.78515625 + x2 = -4.375 + 4.78515625

Reorder the terms:
4.78515625 + -4.375x + x2 = -4.375 + 4.78515625

Combine like terms: -4.375 + 4.78515625 = 0.41015625
4.78515625 + -4.375x + x2 = 0.41015625

Factor a perfect square on the left side:
(x + -2.1875)(x + -2.1875) = 0.41015625

Calculate the square root of the right side: 0.640434423

Break this problem into two subproblems by setting 
(x + -2.1875) equal to 0.640434423 and -0.640434423.

Subproblem 1

x + -2.1875 = 0.640434423 Simplifying x + -2.1875 = 0.640434423 Reorder the terms: -2.1875 + x = 0.640434423 Solving -2.1875 + x = 0.640434423 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.1875' to each side of the equation. -2.1875 + 2.1875 + x = 0.640434423 + 2.1875 Combine like terms: -2.1875 + 2.1875 = 0.0000 0.0000 + x = 0.640434423 + 2.1875 x = 0.640434423 + 2.1875 Combine like terms: 0.640434423 + 2.1875 = 2.827934423 x = 2.827934423 Simplifying x = 2.827934423

Subproblem 2

x + -2.1875 = -0.640434423 Simplifying x + -2.1875 = -0.640434423 Reorder the terms: -2.1875 + x = -0.640434423 Solving -2.1875 + x = -0.640434423 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.1875' to each side of the equation. -2.1875 + 2.1875 + x = -0.640434423 + 2.1875 Combine like terms: -2.1875 + 2.1875 = 0.0000 0.0000 + x = -0.640434423 + 2.1875 x = -0.640434423 + 2.1875 Combine like terms: -0.640434423 + 2.1875 = 1.547065577 x = 1.547065577 Simplifying x = 1.547065577

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.827934423, 1.547065577}

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