5x^2-2x-108=0

Simple and best practice solution for 5x^2-2x-108=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 5x^2-2x-108=0 equation:


Simplifying
5x2 + -2x + -108 = 0

Reorder the terms:
-108 + -2x + 5x2 = 0

Solving
-108 + -2x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-21.6 + -0.4x + x2 = 0

Move the constant term to the right:

Add '21.6' to each side of the equation.
-21.6 + -0.4x + 21.6 + x2 = 0 + 21.6

Reorder the terms:
-21.6 + 21.6 + -0.4x + x2 = 0 + 21.6

Combine like terms: -21.6 + 21.6 = 0.0
0.0 + -0.4x + x2 = 0 + 21.6
-0.4x + x2 = 0 + 21.6

Combine like terms: 0 + 21.6 = 21.6
-0.4x + x2 = 21.6

The x term is -0.4x.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4x + 0.04 + x2 = 21.6 + 0.04

Reorder the terms:
0.04 + -0.4x + x2 = 21.6 + 0.04

Combine like terms: 21.6 + 0.04 = 21.64
0.04 + -0.4x + x2 = 21.64

Factor a perfect square on the left side:
(x + -0.2)(x + -0.2) = 21.64

Calculate the square root of the right side: 4.65188134

Break this problem into two subproblems by setting 
(x + -0.2) equal to 4.65188134 and -4.65188134.

Subproblem 1

x + -0.2 = 4.65188134 Simplifying x + -0.2 = 4.65188134 Reorder the terms: -0.2 + x = 4.65188134 Solving -0.2 + x = 4.65188134 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = 4.65188134 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = 4.65188134 + 0.2 x = 4.65188134 + 0.2 Combine like terms: 4.65188134 + 0.2 = 4.85188134 x = 4.85188134 Simplifying x = 4.85188134

Subproblem 2

x + -0.2 = -4.65188134 Simplifying x + -0.2 = -4.65188134 Reorder the terms: -0.2 + x = -4.65188134 Solving -0.2 + x = -4.65188134 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = -4.65188134 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = -4.65188134 + 0.2 x = -4.65188134 + 0.2 Combine like terms: -4.65188134 + 0.2 = -4.45188134 x = -4.45188134 Simplifying x = -4.45188134

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.85188134, -4.45188134}

See similar equations:

| -56/35= | | 70=3y+13 | | y+z=56 | | 10n^2-11n-22=0 | | Ax-Bc=Dy | | x+8=63.44 | | -34+6m=2(3+8m) | | 2w-15=25 | | 29/3-12=-2 | | 11x^2+18x+15=0 | | 0=x^2+3x-34 | | 2b-3b=3 | | 13*5*4= | | -x^5-9x^3+8x^2=0 | | 98+90+90=180 | | 5/3*(-6/7) | | -105+(-14)+35= | | x+29=125 | | (X+14)+(2x-10)+x=180 | | (X^2-9)-(x-3)=0 | | lnq=(lnp-ln4000)/(-0.8) | | (lnx-ln4000)/(-0.8) | | 3Yp-5=12 | | 81x-1^/u^3=0 | | g(X)=12-0.5x | | 8x-3+3x=-15 | | 8r^2-6=786 | | 3xq-0=6 | | -n^2=-49 | | K^2+5k=50 | | 2(2x+6)+9=2x+29 | | 9/x=12/18 |

Equations solver categories