If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5x^2+18x+9=0
a = 5; b = 18; c = +9;
Δ = b2-4ac
Δ = 182-4·5·9
Δ = 144
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{144}=12$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(18)-12}{2*5}=\frac{-30}{10} =-3 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(18)+12}{2*5}=\frac{-6}{10} =-3/5 $
| 3x+1=19+7x | | 251=n2−n+41 | | 251=n^2−n+41 | | 3/c+13=16 | | 2x=1=6 | | 4(u-7)-7u=-37 | | -4v+2(v+6)=24 | | 9x/5=2x-6 | | 4x+5=2x-14 | | (4.7*x/(4.7+x))/(4.7*x/(4.7+x)+1.8)=3 | | 7z-18=-28+2z | | 2m+9=-4+7(m-6) | | (4.7x/(4.7+x))/(4.7x/(4.7+x)+1.8)=3 | | n/7=9/63 | | 11x-3(2x-6)=43 | | 124=14-6x+3x+5 | | 6x=7.x+6 | | B=12+-1b | | u/4-8=10 | | 6(x-8)=8 | | 42.5x=255 | | -11x+48=25 | | 2(x-1.5)=12 | | t=10=20-t | | 7x+6+10x+3+8x-4=180 | | (9.82*x^2)/2=10 | | 1.5(7.5-x)=4.5 | | (8+x)/5=15 | | 85=10x | | (x+5)/3=16 | | 20=320000/x | | 18=360/x |