35*x^2+50*x-74=0

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Solution for 35*x^2+50*x-74=0 equation:


Simplifying
35x2 + 50x + -74 = 0

Reorder the terms:
-74 + 50x + 35x2 = 0

Solving
-74 + 50x + 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'.
-2.114285714 + 1.428571429x + x2 = 0

Move the constant term to the right:

Add '2.114285714' to each side of the equation.
-2.114285714 + 1.428571429x + 2.114285714 + x2 = 0 + 2.114285714

Reorder the terms:
-2.114285714 + 2.114285714 + 1.428571429x + x2 = 0 + 2.114285714

Combine like terms: -2.114285714 + 2.114285714 = 0.000000000
0.000000000 + 1.428571429x + x2 = 0 + 2.114285714
1.428571429x + x2 = 0 + 2.114285714

Combine like terms: 0 + 2.114285714 = 2.114285714
1.428571429x + x2 = 2.114285714

The x term is 1.428571429x.  Take half its coefficient (0.7142857145).
Square it (0.5102040819) and add it to both sides.

Add '0.5102040819' to each side of the equation.
1.428571429x + 0.5102040819 + x2 = 2.114285714 + 0.5102040819

Reorder the terms:
0.5102040819 + 1.428571429x + x2 = 2.114285714 + 0.5102040819

Combine like terms: 2.114285714 + 0.5102040819 = 2.6244897959
0.5102040819 + 1.428571429x + x2 = 2.6244897959

Factor a perfect square on the left side:
(x + 0.7142857145)(x + 0.7142857145) = 2.6244897959

Calculate the square root of the right side: 1.620027715

Break this problem into two subproblems by setting 
(x + 0.7142857145) equal to 1.620027715 and -1.620027715.

Subproblem 1

x + 0.7142857145 = 1.620027715 Simplifying x + 0.7142857145 = 1.620027715 Reorder the terms: 0.7142857145 + x = 1.620027715 Solving 0.7142857145 + x = 1.620027715 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7142857145' to each side of the equation. 0.7142857145 + -0.7142857145 + x = 1.620027715 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = 1.620027715 + -0.7142857145 x = 1.620027715 + -0.7142857145 Combine like terms: 1.620027715 + -0.7142857145 = 0.9057420005 x = 0.9057420005 Simplifying x = 0.9057420005

Subproblem 2

x + 0.7142857145 = -1.620027715 Simplifying x + 0.7142857145 = -1.620027715 Reorder the terms: 0.7142857145 + x = -1.620027715 Solving 0.7142857145 + x = -1.620027715 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7142857145' to each side of the equation. 0.7142857145 + -0.7142857145 + x = -1.620027715 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = -1.620027715 + -0.7142857145 x = -1.620027715 + -0.7142857145 Combine like terms: -1.620027715 + -0.7142857145 = -2.3343134295 x = -2.3343134295 Simplifying x = -2.3343134295

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.9057420005, -2.3343134295}

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