9x^2-25x-94=0

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Solution for 9x^2-25x-94=0 equation:


Simplifying
9x2 + -25x + -94 = 0

Reorder the terms:
-94 + -25x + 9x2 = 0

Solving
-94 + -25x + 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'.
-10.44444444 + -2.777777778x + x2 = 0

Move the constant term to the right:

Add '10.44444444' to each side of the equation.
-10.44444444 + -2.777777778x + 10.44444444 + x2 = 0 + 10.44444444

Reorder the terms:
-10.44444444 + 10.44444444 + -2.777777778x + x2 = 0 + 10.44444444

Combine like terms: -10.44444444 + 10.44444444 = 0.00000000
0.00000000 + -2.777777778x + x2 = 0 + 10.44444444
-2.777777778x + x2 = 0 + 10.44444444

Combine like terms: 0 + 10.44444444 = 10.44444444
-2.777777778x + x2 = 10.44444444

The x term is -2.777777778x.  Take half its coefficient (-1.388888889).
Square it (1.929012346) and add it to both sides.

Add '1.929012346' to each side of the equation.
-2.777777778x + 1.929012346 + x2 = 10.44444444 + 1.929012346

Reorder the terms:
1.929012346 + -2.777777778x + x2 = 10.44444444 + 1.929012346

Combine like terms: 10.44444444 + 1.929012346 = 12.373456786
1.929012346 + -2.777777778x + x2 = 12.373456786

Factor a perfect square on the left side:
(x + -1.388888889)(x + -1.388888889) = 12.373456786

Calculate the square root of the right side: 3.51759247

Break this problem into two subproblems by setting 
(x + -1.388888889) equal to 3.51759247 and -3.51759247.

Subproblem 1

x + -1.388888889 = 3.51759247 Simplifying x + -1.388888889 = 3.51759247 Reorder the terms: -1.388888889 + x = 3.51759247 Solving -1.388888889 + x = 3.51759247 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.388888889' to each side of the equation. -1.388888889 + 1.388888889 + x = 3.51759247 + 1.388888889 Combine like terms: -1.388888889 + 1.388888889 = 0.000000000 0.000000000 + x = 3.51759247 + 1.388888889 x = 3.51759247 + 1.388888889 Combine like terms: 3.51759247 + 1.388888889 = 4.906481359 x = 4.906481359 Simplifying x = 4.906481359

Subproblem 2

x + -1.388888889 = -3.51759247 Simplifying x + -1.388888889 = -3.51759247 Reorder the terms: -1.388888889 + x = -3.51759247 Solving -1.388888889 + x = -3.51759247 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.388888889' to each side of the equation. -1.388888889 + 1.388888889 + x = -3.51759247 + 1.388888889 Combine like terms: -1.388888889 + 1.388888889 = 0.000000000 0.000000000 + x = -3.51759247 + 1.388888889 x = -3.51759247 + 1.388888889 Combine like terms: -3.51759247 + 1.388888889 = -2.128703581 x = -2.128703581 Simplifying x = -2.128703581

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.906481359, -2.128703581}

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