If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5n^2+39n-8=0
a = 5; b = 39; c = -8;
Δ = b2-4ac
Δ = 392-4·5·(-8)
Δ = 1681
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{1681}=41$$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(39)-41}{2*5}=\frac{-80}{10} =-8 $$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(39)+41}{2*5}=\frac{2}{10} =1/5 $
| 0.8+d+1.6+d+0.8=8.5 | | ((1/2)x+4)+((3/4)x-6)=2x-47 | | 0.15y+0.09(y+2000=)2100 | | 0.2x+152.2=180 | | x^2+x^2=22^2 | | 2(x-4=3(x-1 | | m^2-4=3 | | 0.2x+150.6=180 | | 8(x-5)=5x-13 | | x^2-10+15=3x+3 | | 5x+29=-2(x+3) | | 3(n-1)=n+11 | | 6-8x=-32 | | 9(x+1)=-5x-33 | | -6=-6x+3(x-7) | | X=8x+45 | | 4x+2(-1)=-17 | | 2(5z+4)=3(3z+3) | | q/4+2q=0 | | 8x+45=x | | -10x+200=800 | | 4x-30=-3x+5 | | q/4+2q=900 | | 4x+4+2x+6=90 | | 4(8+2n)=5n+11 | | 8.50=0.15t+2.50 | | 8x-50=350 | | -13.9-7.5n=-97.3+6.4n | | Y^2-8y-19=0 | | 4x-3x-1=19 | | -97.3+6.4n=-33.3 | | 25m-2.1/53m=1/25 |