7x^2-56x-50=0

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Solution for 7x^2-56x-50=0 equation:


Simplifying
7x2 + -56x + -50 = 0

Reorder the terms:
-50 + -56x + 7x2 = 0

Solving
-50 + -56x + 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 + -8x + x2 = 0

Move the constant term to the right:

Add '7.142857143' to each side of the equation.
-7.142857143 + -8x + 7.142857143 + x2 = 0 + 7.142857143

Reorder the terms:
-7.142857143 + 7.142857143 + -8x + x2 = 0 + 7.142857143

Combine like terms: -7.142857143 + 7.142857143 = 0.000000000
0.000000000 + -8x + x2 = 0 + 7.142857143
-8x + x2 = 0 + 7.142857143

Combine like terms: 0 + 7.142857143 = 7.142857143
-8x + x2 = 7.142857143

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 7.142857143 + 16

Reorder the terms:
16 + -8x + x2 = 7.142857143 + 16

Combine like terms: 7.142857143 + 16 = 23.142857143
16 + -8x + x2 = 23.142857143

Factor a perfect square on the left side:
(x + -4)(x + -4) = 23.142857143

Calculate the square root of the right side: 4.810702354

Break this problem into two subproblems by setting 
(x + -4) equal to 4.810702354 and -4.810702354.

Subproblem 1

x + -4 = 4.810702354 Simplifying x + -4 = 4.810702354 Reorder the terms: -4 + x = 4.810702354 Solving -4 + x = 4.810702354 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 4.810702354 + 4 Combine like terms: -4 + 4 = 0 0 + x = 4.810702354 + 4 x = 4.810702354 + 4 Combine like terms: 4.810702354 + 4 = 8.810702354 x = 8.810702354 Simplifying x = 8.810702354

Subproblem 2

x + -4 = -4.810702354 Simplifying x + -4 = -4.810702354 Reorder the terms: -4 + x = -4.810702354 Solving -4 + x = -4.810702354 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -4.810702354 + 4 Combine like terms: -4 + 4 = 0 0 + x = -4.810702354 + 4 x = -4.810702354 + 4 Combine like terms: -4.810702354 + 4 = -0.810702354 x = -0.810702354 Simplifying x = -0.810702354

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.810702354, -0.810702354}

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