If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5x^2-21x+4=0
a = 5; b = -21; c = +4;
Δ = b2-4ac
Δ = -212-4·5·4
Δ = 361
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{361}=19$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-21)-19}{2*5}=\frac{2}{10} =1/5 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-21)+19}{2*5}=\frac{40}{10} =4 $
| -3/5x+1-1/3x=61/33 | | 3;5=4;x | | c+12=2c-6 | | 2/3a-7=19 | | 4c-48=c | | 2x2+7x=15 | | 3x+5=17/5 | | 2x2+7x=14 | | 3p+4p−4p+3p−2p=20 | | 2x-60=3x-92 | | -2k+10=-10 | | 2/3x^2+16=-2 | | 19w+96+6w+59=180 | | 2w-12=30 | | v+100=5v-12 | | 29x+30=28x+30 | | 9y-66=3y | | 2x^2-4x-99=0 | | 3u-62+2u-58=180 | | 10(10n-8)=80 | | x+200+x=900 | | 10|10n-8|=80 | | 3/5-21=a | | 1/3/0.75=y/18 | | 11/15=w-8/15w= | | 8.2x-5.9x=17.48 | | 3q+4=-2q | | 23x-14=9 | | 3/5x-3/2=-4/5+2x | | 8x/(8+x)=5 | | 9x-33=2x=16 | | 4m+1/7=1 |