If it's not what You are looking for type in the equation solver your own equation and let us solve it.
18a^2-39a+20=0
a = 18; b = -39; c = +20;
Δ = b2-4ac
Δ = -392-4·18·20
Δ = 81
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{81}=9$$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-39)-9}{2*18}=\frac{30}{36} =5/6 $$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-39)+9}{2*18}=\frac{48}{36} =1+1/3 $
| t^2+25t-300=0 | | 13x+18=4x+36 | | 8x+11=3x+16 | | -39(-6/13)-39=x | | 49=-7/4u | | -15/8=-3x | | x+.03x=224 | | 7x^2+14x-560=0 | | 3X-2-11X-2=3x-8x+2 | | 4/5=x÷-5/2 | | -3(u+4)+5u=0 | | (180-(7-12x))+(-8x+3)+(-5x)=180 | | 10x+1=5x+11 | | 20=-16-6y | | 5x-23=55 | | 2n+5=68 | | 3(y-6)=25 | | 20-5w=5 | | 6x^2-24x+8=0 | | 0.3+y=1.7 | | 7/3u=-14 | | 5x+11=2x+29 | | 4(x-2)-7x=0 | | x-2.99=84.1 | | 9=-3/5y | | 1.9+v=2.9 | | -14/9=-7y | | -2(w+3)+3w=0 | | -40+x=-95 | | (n÷n-2)+(1÷n²-4)=(3n-1)÷(3n+6) | | 8x/6+32/6=x+5 | | -5+x=29 |