9x^2-7x-10000=0

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Solution for 9x^2-7x-10000=0 equation:


Simplifying
9x2 + -7x + -10000 = 0

Reorder the terms:
-10000 + -7x + 9x2 = 0

Solving
-10000 + -7x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
-1111.111111 + -0.7777777778x + x2 = 0

Move the constant term to the right:

Add '1111.111111' to each side of the equation.
-1111.111111 + -0.7777777778x + 1111.111111 + x2 = 0 + 1111.111111

Reorder the terms:
-1111.111111 + 1111.111111 + -0.7777777778x + x2 = 0 + 1111.111111

Combine like terms: -1111.111111 + 1111.111111 = 0.000000
0.000000 + -0.7777777778x + x2 = 0 + 1111.111111
-0.7777777778x + x2 = 0 + 1111.111111

Combine like terms: 0 + 1111.111111 = 1111.111111
-0.7777777778x + x2 = 1111.111111

The x term is -0.7777777778x.  Take half its coefficient (-0.3888888889).
Square it (0.1512345679) and add it to both sides.

Add '0.1512345679' to each side of the equation.
-0.7777777778x + 0.1512345679 + x2 = 1111.111111 + 0.1512345679

Reorder the terms:
0.1512345679 + -0.7777777778x + x2 = 1111.111111 + 0.1512345679

Combine like terms: 1111.111111 + 0.1512345679 = 1111.2623455679
0.1512345679 + -0.7777777778x + x2 = 1111.2623455679

Factor a perfect square on the left side:
(x + -0.3888888889)(x + -0.3888888889) = 1111.2623455679

Calculate the square root of the right side: 33.335601773

Break this problem into two subproblems by setting 
(x + -0.3888888889) equal to 33.335601773 and -33.335601773.

Subproblem 1

x + -0.3888888889 = 33.335601773 Simplifying x + -0.3888888889 = 33.335601773 Reorder the terms: -0.3888888889 + x = 33.335601773 Solving -0.3888888889 + x = 33.335601773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3888888889' to each side of the equation. -0.3888888889 + 0.3888888889 + x = 33.335601773 + 0.3888888889 Combine like terms: -0.3888888889 + 0.3888888889 = 0.0000000000 0.0000000000 + x = 33.335601773 + 0.3888888889 x = 33.335601773 + 0.3888888889 Combine like terms: 33.335601773 + 0.3888888889 = 33.7244906619 x = 33.7244906619 Simplifying x = 33.7244906619

Subproblem 2

x + -0.3888888889 = -33.335601773 Simplifying x + -0.3888888889 = -33.335601773 Reorder the terms: -0.3888888889 + x = -33.335601773 Solving -0.3888888889 + x = -33.335601773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3888888889' to each side of the equation. -0.3888888889 + 0.3888888889 + x = -33.335601773 + 0.3888888889 Combine like terms: -0.3888888889 + 0.3888888889 = 0.0000000000 0.0000000000 + x = -33.335601773 + 0.3888888889 x = -33.335601773 + 0.3888888889 Combine like terms: -33.335601773 + 0.3888888889 = -32.9467128841 x = -32.9467128841 Simplifying x = -32.9467128841

Solution

The solution to the problem is based on the solutions from the subproblems. x = {33.7244906619, -32.9467128841}

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