3x^2+12x-420=0

Simple and best practice solution for 3x^2+12x-420=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 3x^2+12x-420=0 equation:


Simplifying
3x2 + 12x + -420 = 0

Reorder the terms:
-420 + 12x + 3x2 = 0

Solving
-420 + 12x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-140 + 4x + x2) = 0

Factor a trinomial.
3((-14 + -1x)(10 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-14 + -1x)' equal to zero and attempt to solve: Simplifying -14 + -1x = 0 Solving -14 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -1x = 0 + 14 Combine like terms: -14 + 14 = 0 0 + -1x = 0 + 14 -1x = 0 + 14 Combine like terms: 0 + 14 = 14 -1x = 14 Divide each side by '-1'. x = -14 Simplifying x = -14

Subproblem 2

Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10

Solution

x = {-14, 10}

See similar equations:

| -(8x-5y+6x+10)= | | (7x-18y-10)-(11x-4y+11)= | | (22r+3s-8)-(8r-9s-6)= | | -8(s+2)=36 | | (19a-12b+5)-(8a+4b-5)= | | 3(4s+3)=105 | | rs+4r-3s= | | (22x+14y+11)-(15x+5y+6)= | | 2(a-6)=4 | | (u-8)*10=70 | | 7y-(-8y)= | | (q-4)*6=24 | | (4x+7y+17)-(6x-8y-11)= | | (q-4)*6=234 | | 3333=93 | | (4x+7y+17)+(6x-8y-11)= | | 23-n=5n-85 | | (2x-5y-16)+(8x+7y+11)= | | Y=(7E+06x)+(1E+08) | | ax+2=bx-6 | | -(2a+4b+6c+8)= | | X=140-(140-x) | | 2x^2+x^3=6 | | (14j-15k-8)+(2j-8k-4)= | | (12g+17h+20)+(2g+11h+22)= | | 8x+2y+6z-3x+5z-5y= | | 140-(140-x)= | | 7-3x=x-9 | | 3(w+3)+4(w-2)=7+1 | | (d^2+2d+5)y=0 | | y-50=25(x-2) | | 6a-12b=7d |

Equations solver categories