(7-x)*x=120

Simple and best practice solution for (7-x)*x=120 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 (7-x)*x=120 equation: 



(7-x)*x=120

We move all terms to the left:

(7-x)*x-(120)=0

We add all the numbers together, and all the variables

(-1x+7)*x-120=0

We multiply parentheses

-1x^2+7x-120=0

a = -1; b = 7; c = -120;
Δ = b2-4ac
Δ = 72-4·(-1)·(-120)
Δ = -431
Delta is less than zero, so there is no solution for the equation

See similar equations:

| 180-x=90-x-10 | | 15=7x+29 | | 3(a-8)=-33-6a | | 3.5y=y+5 | | -5(x+3)-x=-9 | | 8x-22=15+x | | 2y=y/3+5 | | 6x-5=3x-9 | | 112x+5=17 | | 18÷2x+5=9 | | 6-(4n-2)=9-5n | | 3(5x-25)=5(3x-15) | | -(5x+6)-x=-6-6 | | -95-18x=46-21x | | b/5-7=18 | | 125+12h=200+12h | | n÷2-9=5+4n | | 9b^2+9b+28=0 | | f(-3)=(-3)+9.5 | | 3x+4(-3+2x)=1-x | | -10(4x-3)+5=100 | | 5+5x+7+9x=180 | | 7x-20=5(x-4) | | (n/4)=-11 | | J/4j=12 | | y^2+21=0 | | 5+5+7+9x=180 | | (n÷2)-9=5+4n | | 5(y-1)=2y+4-3(-7y-2) | | -35+8(x+2)=37 | | (n/4)=11 | | 50+2x=450 |

Equations solver categories