5x^2-36x-81=0

Simple and best practice solution for 5x^2-36x-81=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^2-36x-81=0 equation:


Simplifying
5x2 + -36x + -81 = 0

Reorder the terms:
-81 + -36x + 5x2 = 0

Solving
-81 + -36x + 5x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -5x)(9 + -1x) = 0

Subproblem 1

Set the factor '(-9 + -5x)' equal to zero and attempt to solve: Simplifying -9 + -5x = 0 Solving -9 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -5x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -5x = 0 + 9 -5x = 0 + 9 Combine like terms: 0 + 9 = 9 -5x = 9 Divide each side by '-5'. x = -1.8 Simplifying x = -1.8

Subproblem 2

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-1.8, 9}

See similar equations:

| 980+(-5.761)=x | | n-5+2n=-5 | | -8-x=x+4 | | 7x=48 | | 4w+w=40 | | 2-(9k-28)=6-15k | | 18x^2-23x-6=0 | | 2(4n+2)=6n+12 | | -92=5x+4(-4x+19) | | -6x(-2.5x)=x | | 9*c=-99 | | -0.5x+1=7x-14 | | 8[y-1]-9[y-2]=12 | | 7z+8-2z=23 | | 2/3-3x=1/3+2x | | x=2x+100+3x+3x-500 | | -2x+5(6x+5)=-115 | | -13+h=10 | | 6-r*6*6+r=-42 | | 3(z-2)+6=(z+4) | | 4y+2=-0.3(8-12y) | | .25(8y+4)-17=-0.5(4y-8) | | -143=7x+4(-4x-11) | | 16x=300 | | -y=4x-3 | | 12n-6=4n+18 | | -14x=-5(3x+7) | | 6x+6(-2x+2)=48 | | 4(2b-4)+1=-47 | | 2p-10-9+7p= | | 2y=x-12 | | 3x-12+2x+2=90 |

Equations solver categories