If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(-7+4v)(v+1)=0
We add all the numbers together, and all the variables
(4v-7)(v+1)=0
We multiply parentheses ..
(+4v^2+4v-7v-7)=0
We get rid of parentheses
4v^2+4v-7v-7=0
We add all the numbers together, and all the variables
4v^2-3v-7=0
a = 4; b = -3; c = -7;
Δ = b2-4ac
Δ = -32-4·4·(-7)
Δ = 121
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$v_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$v_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{121}=11$$v_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-3)-11}{2*4}=\frac{-8}{8} =-1 $$v_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-3)+11}{2*4}=\frac{14}{8} =1+3/4 $
| 5-6=3x+x | | 13.6+y=6.8,y= | | 10-(3y-5)=7-4y | | 13.6+y=6.8,y | | 64^2=12.6x | | 12x-8=15x-35-3x+27 | | 3x-8x+6=7x+42 | | P+x/2=41 | | 1/3*75+2/3+60=m | | 8x-16=6x-3+15x | | (2x)-7=3 | | 4r+36/16=3r-18/3 | | 8×x-2=6x-3×1-5x | | 0.2x+3.6=1.4 | | 8×(x-2)=6x-3×(1-5x) | | -7y+4(y-5)=10 | | 4-5x-2x+20=x | | 5x+4=18-3x | | 5x+3-x=27 | | v+9é3=8 | | -5(x-2)=3x-46 | | 6x+7-x=4x+3 | | 9w+13=5(w+5) | | 18-3/2x=-3 | | x+(-4)=+12 | | 48/6x=0 | | 100s-s(s)=0 | | 3x+12-3=20+13 | | 3y+17=38 | | 6y-17y-14=0 | | 1000(1000-x)/10=2000-1x | | 4/7(x)-1/14=3/14 |