7x^2-6x-50=0

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Solution for 7x^2-6x-50=0 equation:


Simplifying
7x2 + -6x + -50 = 0

Reorder the terms:
-50 + -6x + 7x2 = 0

Solving
-50 + -6x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
-7.142857143 + -0.8571428571x + x2 = 0

Move the constant term to the right:

Add '7.142857143' to each side of the equation.
-7.142857143 + -0.8571428571x + 7.142857143 + x2 = 0 + 7.142857143

Reorder the terms:
-7.142857143 + 7.142857143 + -0.8571428571x + x2 = 0 + 7.142857143

Combine like terms: -7.142857143 + 7.142857143 = 0.000000000
0.000000000 + -0.8571428571x + x2 = 0 + 7.142857143
-0.8571428571x + x2 = 0 + 7.142857143

Combine like terms: 0 + 7.142857143 = 7.142857143
-0.8571428571x + x2 = 7.142857143

The x term is -0.8571428571x.  Take half its coefficient (-0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
-0.8571428571x + 0.1836734694 + x2 = 7.142857143 + 0.1836734694

Reorder the terms:
0.1836734694 + -0.8571428571x + x2 = 7.142857143 + 0.1836734694

Combine like terms: 7.142857143 + 0.1836734694 = 7.3265306124
0.1836734694 + -0.8571428571x + x2 = 7.3265306124

Factor a perfect square on the left side:
(x + -0.4285714286)(x + -0.4285714286) = 7.3265306124

Calculate the square root of the right side: 2.706756475

Break this problem into two subproblems by setting 
(x + -0.4285714286) equal to 2.706756475 and -2.706756475.

Subproblem 1

x + -0.4285714286 = 2.706756475 Simplifying x + -0.4285714286 = 2.706756475 Reorder the terms: -0.4285714286 + x = 2.706756475 Solving -0.4285714286 + x = 2.706756475 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4285714286' to each side of the equation. -0.4285714286 + 0.4285714286 + x = 2.706756475 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.0000000000 + x = 2.706756475 + 0.4285714286 x = 2.706756475 + 0.4285714286 Combine like terms: 2.706756475 + 0.4285714286 = 3.1353279036 x = 3.1353279036 Simplifying x = 3.1353279036

Subproblem 2

x + -0.4285714286 = -2.706756475 Simplifying x + -0.4285714286 = -2.706756475 Reorder the terms: -0.4285714286 + x = -2.706756475 Solving -0.4285714286 + x = -2.706756475 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4285714286' to each side of the equation. -0.4285714286 + 0.4285714286 + x = -2.706756475 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.0000000000 + x = -2.706756475 + 0.4285714286 x = -2.706756475 + 0.4285714286 Combine like terms: -2.706756475 + 0.4285714286 = -2.2781850464 x = -2.2781850464 Simplifying x = -2.2781850464

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.1353279036, -2.2781850464}

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