18a^2-3a-105=0

Simple and best practice solution for 18a^2-3a-105=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 18a^2-3a-105=0 equation:


Simplifying
18a2 + -3a + -105 = 0

Reorder the terms:
-105 + -3a + 18a2 = 0

Solving
-105 + -3a + 18a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-35 + -1a + 6a2) = 0

Factor a trinomial.
3((-7 + -3a)(5 + -2a)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-7 + -3a)' equal to zero and attempt to solve: Simplifying -7 + -3a = 0 Solving -7 + -3a = 0 Move all terms containing a to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -3a = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3a = 0 + 7 -3a = 0 + 7 Combine like terms: 0 + 7 = 7 -3a = 7 Divide each side by '-3'. a = -2.333333333 Simplifying a = -2.333333333

Subproblem 2

Set the factor '(5 + -2a)' equal to zero and attempt to solve: Simplifying 5 + -2a = 0 Solving 5 + -2a = 0 Move all terms containing a to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2a = 0 + -5 -2a = 0 + -5 Combine like terms: 0 + -5 = -5 -2a = -5 Divide each side by '-2'. a = 2.5 Simplifying a = 2.5

Solution

a = {-2.333333333, 2.5}

See similar equations:

| 15y^2-42y+27=0 | | 2x-5=-3x+5 | | 25(5+x)=175 | | x+2*x+2= | | 9=3x-2 | | 8/2x=20/35 | | 4x^2=7+3x | | 12x+3-7x+5= | | 1/2n=2n-96 | | 4x+0.75=-2x-0.25 | | -4y-5=-3y-6 | | 2x-5=16x+2 | | 2x+5=-14 | | -0.59=t/-4-0.09 | | 3(y+4)=15y | | x^2+7x=6 | | 5x+3+(-x)=2x+1+2x+3 | | 42=4x-10 | | 2+2y-2y=2 | | 12a-6a+a= | | 7(x-4)/2 | | 108=8x-12 | | -7x-14-x-6= | | 2(c-4)+8=3c-8 | | 11-5x=-24 | | 2(c-4)+8=3cx-8 | | 15-9x=-84 | | 12n-8=8n+9+1 | | 115=8x-5 | | 1/2x-7 | | 14-6x=-4 | | 2x^2=1+7x |

Equations solver categories