If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5x^2+22x+21=0
a = 5; b = 22; c = +21;
Δ = b2-4ac
Δ = 222-4·5·21
Δ = 64
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{64}=8$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(22)-8}{2*5}=\frac{-30}{10} =-3 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(22)+8}{2*5}=\frac{-14}{10} =-1+2/5 $
| 12-7c=-65 | | t-2=2t-15 | | 8y-44=6(y-8) | | x-6=8+ | | -3s+-6=-2s+-8-s | | g/4+16=18 | | 19x-2+16+2=105 | | -5(w+1)=w-8+2(6w+3) | | 5x3=4-1 | | -15k-12+9k=0 | | 2x3=5+5 | | w+88=15 | | 720+.2x=x | | z+29=62 | | 11d−1/3(6−12d)=58 | | 3(3x-4)=54 | | 11d−13(6−12d)=58 | | 84=4j | | 8t+6=-10 | | 5z+13=3z+28 | | 9(2x+1)=153 | | -6x-20=-4 | | 4.3(x+2.5)-4x=8.11 | | 9x=23x | | 1.2x=x/1 | | x/5-10=27 | | n^2+7n=n(n+) | | 6+2(1x-5)+4x=44 | | 15n-1/6n=1/6n-1 | | 1.2x=x-1 | | 1/4x+2=20 | | .75x+7=5.5 |