7x^2-101x-364=0

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Solution for 7x^2-101x-364=0 equation:


Simplifying
7x2 + -101x + -364 = 0

Reorder the terms:
-364 + -101x + 7x2 = 0

Solving
-364 + -101x + 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'.
-52 + -14.42857143x + x2 = 0

Move the constant term to the right:

Add '52' to each side of the equation.
-52 + -14.42857143x + 52 + x2 = 0 + 52

Reorder the terms:
-52 + 52 + -14.42857143x + x2 = 0 + 52

Combine like terms: -52 + 52 = 0
0 + -14.42857143x + x2 = 0 + 52
-14.42857143x + x2 = 0 + 52

Combine like terms: 0 + 52 = 52
-14.42857143x + x2 = 52

The x term is -14.42857143x.  Take half its coefficient (-7.214285715).
Square it (52.04591838) and add it to both sides.

Add '52.04591838' to each side of the equation.
-14.42857143x + 52.04591838 + x2 = 52 + 52.04591838

Reorder the terms:
52.04591838 + -14.42857143x + x2 = 52 + 52.04591838

Combine like terms: 52 + 52.04591838 = 104.04591838
52.04591838 + -14.42857143x + x2 = 104.04591838

Factor a perfect square on the left side:
(x + -7.214285715)(x + -7.214285715) = 104.04591838

Calculate the square root of the right side: 10.200290113

Break this problem into two subproblems by setting 
(x + -7.214285715) equal to 10.200290113 and -10.200290113.

Subproblem 1

x + -7.214285715 = 10.200290113 Simplifying x + -7.214285715 = 10.200290113 Reorder the terms: -7.214285715 + x = 10.200290113 Solving -7.214285715 + x = 10.200290113 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.214285715' to each side of the equation. -7.214285715 + 7.214285715 + x = 10.200290113 + 7.214285715 Combine like terms: -7.214285715 + 7.214285715 = 0.000000000 0.000000000 + x = 10.200290113 + 7.214285715 x = 10.200290113 + 7.214285715 Combine like terms: 10.200290113 + 7.214285715 = 17.414575828 x = 17.414575828 Simplifying x = 17.414575828

Subproblem 2

x + -7.214285715 = -10.200290113 Simplifying x + -7.214285715 = -10.200290113 Reorder the terms: -7.214285715 + x = -10.200290113 Solving -7.214285715 + x = -10.200290113 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.214285715' to each side of the equation. -7.214285715 + 7.214285715 + x = -10.200290113 + 7.214285715 Combine like terms: -7.214285715 + 7.214285715 = 0.000000000 0.000000000 + x = -10.200290113 + 7.214285715 x = -10.200290113 + 7.214285715 Combine like terms: -10.200290113 + 7.214285715 = -2.986004398 x = -2.986004398 Simplifying x = -2.986004398

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.414575828, -2.986004398}

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