9x^2-25x-116=0

Simple and best practice solution for 9x^2-25x-116=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 9x^2-25x-116=0 equation:


Simplifying
9x2 + -25x + -116 = 0

Reorder the terms:
-116 + -25x + 9x2 = 0

Solving
-116 + -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'.
-12.88888889 + -2.777777778x + x2 = 0

Move the constant term to the right:

Add '12.88888889' to each side of the equation.
-12.88888889 + -2.777777778x + 12.88888889 + x2 = 0 + 12.88888889

Reorder the terms:
-12.88888889 + 12.88888889 + -2.777777778x + x2 = 0 + 12.88888889

Combine like terms: -12.88888889 + 12.88888889 = 0.00000000
0.00000000 + -2.777777778x + x2 = 0 + 12.88888889
-2.777777778x + x2 = 0 + 12.88888889

Combine like terms: 0 + 12.88888889 = 12.88888889
-2.777777778x + x2 = 12.88888889

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 = 12.88888889 + 1.929012346

Reorder the terms:
1.929012346 + -2.777777778x + x2 = 12.88888889 + 1.929012346

Combine like terms: 12.88888889 + 1.929012346 = 14.817901236
1.929012346 + -2.777777778x + x2 = 14.817901236

Factor a perfect square on the left side:
(x + -1.388888889)(x + -1.388888889) = 14.817901236

Calculate the square root of the right side: 3.849402712

Break this problem into two subproblems by setting 
(x + -1.388888889) equal to 3.849402712 and -3.849402712.

Subproblem 1

x + -1.388888889 = 3.849402712 Simplifying x + -1.388888889 = 3.849402712 Reorder the terms: -1.388888889 + x = 3.849402712 Solving -1.388888889 + x = 3.849402712 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 = 3.849402712 + 1.388888889 Combine like terms: -1.388888889 + 1.388888889 = 0.000000000 0.000000000 + x = 3.849402712 + 1.388888889 x = 3.849402712 + 1.388888889 Combine like terms: 3.849402712 + 1.388888889 = 5.238291601 x = 5.238291601 Simplifying x = 5.238291601

Subproblem 2

x + -1.388888889 = -3.849402712 Simplifying x + -1.388888889 = -3.849402712 Reorder the terms: -1.388888889 + x = -3.849402712 Solving -1.388888889 + x = -3.849402712 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 = -3.849402712 + 1.388888889 Combine like terms: -1.388888889 + 1.388888889 = 0.000000000 0.000000000 + x = -3.849402712 + 1.388888889 x = -3.849402712 + 1.388888889 Combine like terms: -3.849402712 + 1.388888889 = -2.460513823 x = -2.460513823 Simplifying x = -2.460513823

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.238291601, -2.460513823}

See similar equations:

| 3m-6=-2m+9 | | X^3-6X^2+71X-180=0 | | 9x^2-17x-116=0 | | x^3-5x=38 | | 7(3g+6)/4=31.5 | | 9d-8=2d+13 | | 13d+5=7d+47 | | 6x+6=6(x+3) | | 150-9xc=105 | | 7(x-2)=17.5 | | 96-7x=20x+24 | | 7(a+7)=86.1 | | 4x+2(3-x)=2x-5 | | 24.7=9c-5 | | 3e-3=12.6 | | 8p=34.4 | | 8(x-8)=-48 | | 4(a+2)=44 | | 5e-2=8 | | 5e-2=18 | | m+n=r | | 11-8x=-109 | | 11x-4=-5 | | y=-1/2x-2 | | 59=7x-11 | | 13+6x=61 | | 3*(4a-3)=-2a-2a+23 | | 8x-7=105 | | 3x(4a-3)=-2a-2a+23 | | x+2/2=7-x+1/3 | | 2x^3/2*-3^-3/2 | | 2(y-3)=20 |

Equations solver categories