If it's not what You are looking for type in the equation solver your own equation and let us solve it.
8.4x^2-36x-394=0
a = 8.4; b = -36; c = -394;
Δ = b2-4ac
Δ = -362-4·8.4·(-394)
Δ = 14534.4
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-36)-\sqrt{14534.4}}{2*8.4}=\frac{36-\sqrt{14534.4}}{16.8} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-36)+\sqrt{14534.4}}{2*8.4}=\frac{36+\sqrt{14534.4}}{16.8} $
| 70=6000/12*r | | 19.95p+2.15p=24.95p+.16p | | -4+7y=-18 | | (X-9)(x-9)=4(x-2) | | 9/25=x/5 | | x-17=46 | | -2x+5+2x=-1+(-1)+6x+2 | | 4x=1/4x+70 | | x-2=4.2 | | -5d-5=-25 | | 7p+157=180 | | -2(4s-3)-6=3(7s+6)-5 | | h=-16(2)^2+10(2)+16 | | 2x+10=12x-3 | | h/4-1=1 | | 13-(s-5)-4(s-1)+s=5 | | 19+19z=-19 | | (U-7)^2=2u^2-10u+37 | | 9x+7-10x+2=8x-9x-3 | | 1.3x-4=9 | | 4(x-4)-3(x+1)-14=-25 | | 19×19z=-19 | | x+2x+2x+20+3x+20=360 | | 2x+135°+x=180 | | v-3/4=-1/3 | | 15+2a=7 | | 1.8(2x+3)=3.5(x+2 | | 5(2x+1)+5=3x+1+4 | | (9b+b)(4b-5)=0 | | -5/9=y+4 | | 7(3x-2)+4(10-3x)=4(2x+3)-10 | | 3+2r=-5 |