If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7X^2-30X+4=0
a = 7; b = -30; c = +4;
Δ = b2-4ac
Δ = -302-4·7·4
Δ = 788
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{788}=\sqrt{4*197}=\sqrt{4}*\sqrt{197}=2\sqrt{197}$$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-30)-2\sqrt{197}}{2*7}=\frac{30-2\sqrt{197}}{14} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-30)+2\sqrt{197}}{2*7}=\frac{30+2\sqrt{197}}{14} $
| -7u+1=-8-6u | | 1/2k+(-10)=-21 | | -7u+1=-8−6u | | 2x+5=2(5x-20) | | -6-2n-10n=-10n+8 | | 1=25-k | | -6−2n−10n=-10n+8 | | 6=10n-4n=n=1 | | 17x=-45 | | 121=-12g | | -2/3+1/2x=-7/60 | | 4x-5(2x+1)=-1x+-5 | | .08/1.00=x/8.00 | | b+1=21/3 | | -8.02+x=2.0 | | 1/5*x= | | 1/5*x=10/13 | | -8w+26=-5(w-7) | | -4+4k=12 | | 5z+3z-2=70 | | .08*x=8.0 | | 1/5*x=13/10 | | x/5=13/11 | | 0.15x+x=38375 | | 1/5x=13/10 | | -4+x=6+1/5x | | -3/2=(k+3)/(-3k-3) | | X^2y’’-6y=0 | | 8+4n=2(4+2n) | | 1-3k-4=0 | | 4(.75+.25y)=-5+2X | | 5x+10+4x=360 |