3x^2+21x=180

Simple and best practice solution for 3x^2+21x=180 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+21x=180 equation:


Simplifying
3x2 + 21x = 180

Reorder the terms:
21x + 3x2 = 180

Solving
21x + 3x2 = 180

Solving for variable 'x'.

Reorder the terms:
-180 + 21x + 3x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-180 + 21x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-60 + 7x + x2) = 0

Factor a trinomial.
3((-12 + -1x)(5 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-12 + -1x)' equal to zero and attempt to solve: Simplifying -12 + -1x = 0 Solving -12 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + -1x = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -1x = 0 + 12 -1x = 0 + 12 Combine like terms: 0 + 12 = 12 -1x = 12 Divide each side by '-1'. x = -12 Simplifying x = -12

Subproblem 2

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-12, 5}

See similar equations:

| (x+6)= | | 4(t*2)=8(t+30) | | .1(a+1)=.16(2-a) | | 6x+4x-2x+5x=x | | =5a+10 | | 1A+2B=3c | | x^3=16x | | 22=6x+4 | | 27x^3-1=0 | | x=-2+-1y | | 1A+2B= | | 4.9(3.7x+1.4)=34.7 | | 6x+3+x=2+4x+4 | | 5x=4x+4 | | -8t=24 | | (-25-15)(-11-29)= | | 14+30(5)-(-2)= | | 9x-126=5x-10 | | y=0.2(0)-6 | | y=0.2(5)-6 | | -4z^4= | | .1(a+1)=.17(2-a) | | y+0.4=0.6(y+4) | | 3(x-6)+2x=5(x+5)-43 | | 9x-(7-4x)= | | x-4=-2x-4 | | 3x+7-x=21 | | -3x-2=13 | | 10(x+2)=9(x-2)+x | | 244-x=236 | | -8-9=3+5-2x | | 9(x+5)+7=9x+6 |

Equations solver categories