18x^2-7x-8=

Simple and best practice solution for 18x^2-7x-8= 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^2-7x-8= equation:


Simplifying
18x2 + -7x + -8 = 0

Reorder the terms:
-8 + -7x + 18x2 = 0

Solving
-8 + -7x + 18x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -2x)(8 + -9x) = 0

Subproblem 1

Set the factor '(-1 + -2x)' equal to zero and attempt to solve: Simplifying -1 + -2x = 0 Solving -1 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2x = 0 + 1 -2x = 0 + 1 Combine like terms: 0 + 1 = 1 -2x = 1 Divide each side by '-2'. x = -0.5 Simplifying x = -0.5

Subproblem 2

Set the factor '(8 + -9x)' equal to zero and attempt to solve: Simplifying 8 + -9x = 0 Solving 8 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -9x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -9x = 0 + -8 -9x = 0 + -8 Combine like terms: 0 + -8 = -8 -9x = -8 Divide each side by '-9'. x = 0.8888888889 Simplifying x = 0.8888888889

Solution

x = {-0.5, 0.8888888889}

See similar equations:

| -3y+6=-3y(2y+2) | | 4(5+x)=35 | | x+5/8=-15 | | -(w+3)=7 | | -30+-30=30 | | 50+65x=45+90x | | 7b=-119 | | 1=11-2*5 | | 2.2x-4=-9.7 | | 3k-6k-2=k+2 | | 5x+6+7x=2-20 | | 3a+4b=6 | | 3r+7=15+r | | n^2+12+4n+11=76 | | 5t(4t+5)=0 | | 5(-5.5)+-8=3+7(-5.5) | | 7(4x-3y+9)-3(2x+5y-4)= | | 4.5x-180=455 | | 24-10b=11 | | x-10 = 6 (9-10x)5 | | 0.66x-0.25=3.5 | | 4a-8=9a | | 29x+34x= | | (2x^3)-(30x^2)+(72x)=0 | | 0=5k-3(1+k)+9 | | 5+1.5(z+2)=3.5z-4 | | 10x^2+21x-49=0 | | 7-[x-(3-2x)]=-(2x-4)-18 | | (4y-5)+(2y+5)=90 | | 11=k+1 | | 14x^2-5x-6= | | 5(g+2)+g=6(g-4) |

Equations solver categories