12x^2+78x-42=0

Simple and best practice solution for 12x^2+78x-42=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 12x^2+78x-42=0 equation:


Simplifying
12x2 + 78x + -42 = 0

Reorder the terms:
-42 + 78x + 12x2 = 0

Solving
-42 + 78x + 12x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '6'.
6(-7 + 13x + 2x2) = 0

Factor a trinomial.
6((-7 + -1x)(1 + -2x)) = 0

Ignore the factor 6.

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

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

Solution

x = {-7, 0.5}

See similar equations:

| 4x-32=8x-134+18 | | -3t*-20= | | 7-n+6=-3(3n+10) | | 3x-5-x=1x+6 | | 5x+18=-3x | | -3*-20= | | 0.88y+4=y-0.8 | | (8+2b)-3=9 | | x/12-1/12=o | | 1=5+x/6 | | 3*5*2+3= | | 8-4/5f-14-2f | | (a/-7)-7=5 | | d/2+8=3 | | 4x+3.2=x+05 | | .5x-.75=.6 | | 4x+13=41 | | 8x+4-2x=-14 | | 81x^2-310x-2000=0 | | 3a+1=-3.6a-3.6 | | 4(5x^2+10)= | | h=-16t^2+40t+4 | | 3.4(6x+9)=14 | | 16-4=142x | | (11-7)*2= | | 4+2x=4x-6 | | x+18=302 | | -x^2+10x-2400=0 | | 5r-1.5=4.5 | | 10k+p=a+bp | | -125r^3-8=(-5x-2) | | 3n-3=4n+1 |

Equations solver categories