If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5v^2-7v-7=0
a = 5; b = -7; c = -7;
Δ = b2-4ac
Δ = -72-4·5·(-7)
Δ = 189
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}$$v_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{189}=\sqrt{9*21}=\sqrt{9}*\sqrt{21}=3\sqrt{21}$$v_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-7)-3\sqrt{21}}{2*5}=\frac{7-3\sqrt{21}}{10} $$v_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+3\sqrt{21}}{2*5}=\frac{7+3\sqrt{21}}{10} $
| -3=-s+10/2 | | (4x-2)÷3=(4x+2)÷5 | | 5/4e+1/2=2e-1/2= | | 1/3xx/x=5/7 | | 100=(25)/(3x) | | 0.10x+x=1.45 | | 4x/9=-2/3 | | -24=-2b+10b | | 5/4=4c+1/4 | | 4q+5-9=2(q-3) | | -22=-2(b+2) | | 100=25|3x | | 1000x+160=30 | | 2(4+q)=-8 | | 100=25/3x | | q-67=3 | | 25+q=1/2q-3= | | -5u-2u=7 | | 6+x+7x=78 | | (40x)+(8*1.5x)=600 | | -2+r/2=-1 | | 48=-6(p-1) | | 12x-30=3x+20=5x+40 | | 9j+4=13j-6= | | 7+r/2=4 | | 1-z/2=6 | | 25=f+13 | | -8c+7c=-12 | | 4+2x=22-4x | | -5s+2=47 | | X+(x×.0925)=35 | | 37=10r-3 |