0=2x^2-6x-23

Simple and best practice solution for 0=2x^2-6x-23 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 0=2x^2-6x-23 equation:


Simplifying
0 = 2x2 + -6x + -23

Reorder the terms:
0 = -23 + -6x + 2x2

Solving
0 = -23 + -6x + 2x2

Solving for variable 'x'.

Combine like terms: 0 + 23 = 23
23 + 6x + -2x2 = -23 + -6x + 2x2 + 23 + 6x + -2x2

Reorder the terms:
23 + 6x + -2x2 = -23 + 23 + -6x + 6x + 2x2 + -2x2

Combine like terms: -23 + 23 = 0
23 + 6x + -2x2 = 0 + -6x + 6x + 2x2 + -2x2
23 + 6x + -2x2 = -6x + 6x + 2x2 + -2x2

Combine like terms: -6x + 6x = 0
23 + 6x + -2x2 = 0 + 2x2 + -2x2
23 + 6x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
23 + 6x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-11.5 + -3x + x2 = 0

Move the constant term to the right:

Add '11.5' to each side of the equation.
-11.5 + -3x + 11.5 + x2 = 0 + 11.5

Reorder the terms:
-11.5 + 11.5 + -3x + x2 = 0 + 11.5

Combine like terms: -11.5 + 11.5 = 0.0
0.0 + -3x + x2 = 0 + 11.5
-3x + x2 = 0 + 11.5

Combine like terms: 0 + 11.5 = 11.5
-3x + x2 = 11.5

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 11.5 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 11.5 + 2.25

Combine like terms: 11.5 + 2.25 = 13.75
2.25 + -3x + x2 = 13.75

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 13.75

Calculate the square root of the right side: 3.708099244

Break this problem into two subproblems by setting 
(x + -1.5) equal to 3.708099244 and -3.708099244.

Subproblem 1

x + -1.5 = 3.708099244 Simplifying x + -1.5 = 3.708099244 Reorder the terms: -1.5 + x = 3.708099244 Solving -1.5 + x = 3.708099244 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 3.708099244 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 3.708099244 + 1.5 x = 3.708099244 + 1.5 Combine like terms: 3.708099244 + 1.5 = 5.208099244 x = 5.208099244 Simplifying x = 5.208099244

Subproblem 2

x + -1.5 = -3.708099244 Simplifying x + -1.5 = -3.708099244 Reorder the terms: -1.5 + x = -3.708099244 Solving -1.5 + x = -3.708099244 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -3.708099244 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -3.708099244 + 1.5 x = -3.708099244 + 1.5 Combine like terms: -3.708099244 + 1.5 = -2.208099244 x = -2.208099244 Simplifying x = -2.208099244

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.208099244, -2.208099244}

See similar equations:

| 4x^2-121x+885=0 | | 4x^2+8x=396 | | 3(x-4)+10=34 | | X^2-6=-8x-6 | | 60x+2x^2-2x^3=0 | | 8p+8=15+7p | | 2n^1+8n+1=0 | | 3000x^2+2500x-6021=0 | | (X^2-7)= | | 9(x-2)=4x-3 | | x+5-8x+2=0 | | 2000x^2+2100x-4601=0 | | 4^10/4^8 | | y-4=7y-5 | | 24v^6w^8-28v^3w^3y^7=0 | | 26.5=-5.5+9.5(x+7.5) | | x^2-y^2-x=1 | | Y=8/9x-6 | | 8x-6=3x+5 | | f(x)=(X^2-1)(5x+10) | | 6(y-9)=8y-54 | | 2/5-1/3=2 | | 15x-5=10(x+1) | | x/8-6=0 | | y=x^5+5x^4-10x^2+6 | | 63t^3+1=0 | | 5/6-2/7= | | -1/5=4/3v-3/2 | | 2h-4(9)=54h-92h | | z-8/3=z/7 | | 5x+3*2x-6=0 | | X/4-x/5=3/4 |

Equations solver categories