18x^2+18x-317=0

Simple and best practice solution for 18x^2+18x-317=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 18x^2+18x-317=0 equation:


Simplifying
18x2 + 18x + -317 = 0

Reorder the terms:
-317 + 18x + 18x2 = 0

Solving
-317 + 18x + 18x2 = 0

Solving for variable 'x'.

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

Divide each side by '18'.
-17.61111111 + x + x2 = 0

Move the constant term to the right:

Add '17.61111111' to each side of the equation.
-17.61111111 + x + 17.61111111 + x2 = 0 + 17.61111111

Reorder the terms:
-17.61111111 + 17.61111111 + x + x2 = 0 + 17.61111111

Combine like terms: -17.61111111 + 17.61111111 = 0.00000000
0.00000000 + x + x2 = 0 + 17.61111111
x + x2 = 0 + 17.61111111

Combine like terms: 0 + 17.61111111 = 17.61111111
x + x2 = 17.61111111

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 17.61111111 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 17.61111111 + 0.25

Combine like terms: 17.61111111 + 0.25 = 17.86111111
1.25 + x2 = 17.86111111

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 17.86111111

Calculate the square root of the right side: 4.226240778

Break this problem into two subproblems by setting 
(x + 0.5) equal to 4.226240778 and -4.226240778.

Subproblem 1

x + 0.5 = 4.226240778 Simplifying x + 0.5 = 4.226240778 Reorder the terms: 0.5 + x = 4.226240778 Solving 0.5 + x = 4.226240778 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 4.226240778 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 4.226240778 + -0.5 x = 4.226240778 + -0.5 Combine like terms: 4.226240778 + -0.5 = 3.726240778 x = 3.726240778 Simplifying x = 3.726240778

Subproblem 2

x + 0.5 = -4.226240778 Simplifying x + 0.5 = -4.226240778 Reorder the terms: 0.5 + x = -4.226240778 Solving 0.5 + x = -4.226240778 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -4.226240778 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -4.226240778 + -0.5 x = -4.226240778 + -0.5 Combine like terms: -4.226240778 + -0.5 = -4.726240778 x = -4.726240778 Simplifying x = -4.726240778

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.726240778, -4.726240778}

See similar equations:

| 291*2= | | 3(y+2)+3(y-3)=15 | | 3X-3(2X-4)=8 | | v^2-22v+21= | | -6x^2+300x-3901=0 | | 51*3= | | -6x^2+300x-3501=0 | | -6x^2+300x-3500=0 | | 4x+35=9x+5 | | -6x^2+300x-4000=0 | | -4-4x+x^2+x^3=0 | | 9N-19=7N+11 | | -6x^2+300x-3000=0 | | 18x^2+18x-343=0 | | x=13+8y | | 6b(a-8)-7(a-8)=0 | | 9N-17=7N+11 | | -6x^2+300x-2000=0 | | 15c^2-5c-40=0 | | 5+10x=45 | | m-9=-11 | | 8x^3+x^2-32x-4=0 | | -20-3x+2x^2=0 | | y+3x^4y=0 | | -6x^2+300x-1000=0 | | 16x^2-23x=0 | | 2x-27=-x | | 4x^6-9x^5=0 | | 4t^2=9t | | -16x^2+110x=0 | | 6b+9g-5=22 | | 4y^2-6y=0 |

Equations solver categories