35x^2+12x-35=0

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Solution for 35x^2+12x-35=0 equation:


Simplifying
35x2 + 12x + -35 = 0

Reorder the terms:
-35 + 12x + 35x2 = 0

Solving
-35 + 12x + 35x2 = 0

Solving for variable 'x'.

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

Divide each side by '35'.
-1 + 0.3428571429x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 0.3428571429x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 0.3428571429x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 0.3428571429x + x2 = 0 + 1
0.3428571429x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
0.3428571429x + x2 = 1

The x term is 0.3428571429x.  Take half its coefficient (0.1714285715).
Square it (0.02938775513) and add it to both sides.

Add '0.02938775513' to each side of the equation.
0.3428571429x + 0.02938775513 + x2 = 1 + 0.02938775513

Reorder the terms:
0.02938775513 + 0.3428571429x + x2 = 1 + 0.02938775513

Combine like terms: 1 + 0.02938775513 = 1.02938775513
0.02938775513 + 0.3428571429x + x2 = 1.02938775513

Factor a perfect square on the left side:
(x + 0.1714285715)(x + 0.1714285715) = 1.02938775513

Calculate the square root of the right side: 1.01458748

Break this problem into two subproblems by setting 
(x + 0.1714285715) equal to 1.01458748 and -1.01458748.

Subproblem 1

x + 0.1714285715 = 1.01458748 Simplifying x + 0.1714285715 = 1.01458748 Reorder the terms: 0.1714285715 + x = 1.01458748 Solving 0.1714285715 + x = 1.01458748 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1714285715' to each side of the equation. 0.1714285715 + -0.1714285715 + x = 1.01458748 + -0.1714285715 Combine like terms: 0.1714285715 + -0.1714285715 = 0.0000000000 0.0000000000 + x = 1.01458748 + -0.1714285715 x = 1.01458748 + -0.1714285715 Combine like terms: 1.01458748 + -0.1714285715 = 0.8431589085 x = 0.8431589085 Simplifying x = 0.8431589085

Subproblem 2

x + 0.1714285715 = -1.01458748 Simplifying x + 0.1714285715 = -1.01458748 Reorder the terms: 0.1714285715 + x = -1.01458748 Solving 0.1714285715 + x = -1.01458748 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1714285715' to each side of the equation. 0.1714285715 + -0.1714285715 + x = -1.01458748 + -0.1714285715 Combine like terms: 0.1714285715 + -0.1714285715 = 0.0000000000 0.0000000000 + x = -1.01458748 + -0.1714285715 x = -1.01458748 + -0.1714285715 Combine like terms: -1.01458748 + -0.1714285715 = -1.1860160515 x = -1.1860160515 Simplifying x = -1.1860160515

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.8431589085, -1.1860160515}

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