35x^2-12x-49=0

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Solution for 35x^2-12x-49=0 equation:


Simplifying
35x2 + -12x + -49 = 0

Reorder the terms:
-49 + -12x + 35x2 = 0

Solving
-49 + -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'.
-1.4 + -0.3428571429x + x2 = 0

Move the constant term to the right:

Add '1.4' to each side of the equation.
-1.4 + -0.3428571429x + 1.4 + x2 = 0 + 1.4

Reorder the terms:
-1.4 + 1.4 + -0.3428571429x + x2 = 0 + 1.4

Combine like terms: -1.4 + 1.4 = 0.0
0.0 + -0.3428571429x + x2 = 0 + 1.4
-0.3428571429x + x2 = 0 + 1.4

Combine like terms: 0 + 1.4 = 1.4
-0.3428571429x + x2 = 1.4

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 = 1.4 + 0.02938775513

Reorder the terms:
0.02938775513 + -0.3428571429x + x2 = 1.4 + 0.02938775513

Combine like terms: 1.4 + 0.02938775513 = 1.42938775513
0.02938775513 + -0.3428571429x + x2 = 1.42938775513

Factor a perfect square on the left side:
(x + -0.1714285715)(x + -0.1714285715) = 1.42938775513

Calculate the square root of the right side: 1.195570054

Break this problem into two subproblems by setting 
(x + -0.1714285715) equal to 1.195570054 and -1.195570054.

Subproblem 1

x + -0.1714285715 = 1.195570054 Simplifying x + -0.1714285715 = 1.195570054 Reorder the terms: -0.1714285715 + x = 1.195570054 Solving -0.1714285715 + x = 1.195570054 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 = 1.195570054 + 0.1714285715 Combine like terms: -0.1714285715 + 0.1714285715 = 0.0000000000 0.0000000000 + x = 1.195570054 + 0.1714285715 x = 1.195570054 + 0.1714285715 Combine like terms: 1.195570054 + 0.1714285715 = 1.3669986255 x = 1.3669986255 Simplifying x = 1.3669986255

Subproblem 2

x + -0.1714285715 = -1.195570054 Simplifying x + -0.1714285715 = -1.195570054 Reorder the terms: -0.1714285715 + x = -1.195570054 Solving -0.1714285715 + x = -1.195570054 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 = -1.195570054 + 0.1714285715 Combine like terms: -0.1714285715 + 0.1714285715 = 0.0000000000 0.0000000000 + x = -1.195570054 + 0.1714285715 x = -1.195570054 + 0.1714285715 Combine like terms: -1.195570054 + 0.1714285715 = -1.0241414825 x = -1.0241414825 Simplifying x = -1.0241414825

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.3669986255, -1.0241414825}

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