2x^2+x-27=0

Simple and best practice solution for 2x^2+x-27=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 2x^2+x-27=0 equation:


Simplifying
2x2 + x + -27 = 0

Reorder the terms:
-27 + x + 2x2 = 0

Solving
-27 + x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-13.5 + 0.5x + x2 = 0

Move the constant term to the right:

Add '13.5' to each side of the equation.
-13.5 + 0.5x + 13.5 + x2 = 0 + 13.5

Reorder the terms:
-13.5 + 13.5 + 0.5x + x2 = 0 + 13.5

Combine like terms: -13.5 + 13.5 = 0.0
0.0 + 0.5x + x2 = 0 + 13.5
0.5x + x2 = 0 + 13.5

Combine like terms: 0 + 13.5 = 13.5
0.5x + x2 = 13.5

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.
0.5x + 0.25 + x2 = 13.5 + 0.25

Reorder the terms:
0.25 + 0.5x + x2 = 13.5 + 0.25

Combine like terms: 13.5 + 0.25 = 13.75
0.25 + 0.5x + x2 = 13.75

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 13.75

Calculate the square root of the right side: 3.708099244

Break this problem into two subproblems by setting 
(x + 0.5) equal to 3.708099244 and -3.708099244.

Subproblem 1

x + 0.5 = 3.708099244 Simplifying x + 0.5 = 3.708099244 Reorder the terms: 0.5 + x = 3.708099244 Solving 0.5 + x = 3.708099244 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 = 3.708099244 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 3.708099244 + -0.5 x = 3.708099244 + -0.5 Combine like terms: 3.708099244 + -0.5 = 3.208099244 x = 3.208099244 Simplifying x = 3.208099244

Subproblem 2

x + 0.5 = -3.708099244 Simplifying x + 0.5 = -3.708099244 Reorder the terms: 0.5 + x = -3.708099244 Solving 0.5 + x = -3.708099244 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 = -3.708099244 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -3.708099244 + -0.5 x = -3.708099244 + -0.5 Combine like terms: -3.708099244 + -0.5 = -4.208099244 x = -4.208099244 Simplifying x = -4.208099244

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.208099244, -4.208099244}

See similar equations:

| u^2-4w+4=0 | | 2x+6y/20x+9y=69 | | 3=28-14u-6u | | 36+12t-12=-6 | | 3+2x/7+5-x/2=17/14 | | y^3z^6/y^7z | | 5x-7(x+3)=-2x+12 | | -9x+15y=0 | | -[8z-(17z+4)]=4+(8z+2) | | 3x=4(x-4)+4 | | 53.17x^2-220.68x+220.68=0 | | y=-1.7*4.5+4.5 | | 2x-2=3x+3 | | f/-2-9=13 | | y=-1.7x+4.5 | | 11+11-x=2 | | 0=x^2-x+20 | | 4x-4=2(x-1) | | (-2x+1)(4-3x)= | | 45-t=13 | | y=-1.7*1.7+4.5 | | 4(3y-1)=6(3y-y) | | 2X+4=3X-9 | | (0.5x-5)=-6(-x+10) | | z^6y/z^5y^4 | | 2X+4=3X+9 | | 26-(x+9)=9x-3 | | 2X+4=3+9 | | (3x+2)/4=26 | | 5(e-2)+7=22 | | 5(x-8)+22=2(x-6) | | h+11h-16=74 |

Equations solver categories