If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-3x^2+x+12=0
a = -3; b = 1; c = +12;
Δ = b2-4ac
Δ = 12-4·(-3)·12
Δ = 145
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{-(1)-\sqrt{145}}{2*-3}=\frac{-1-\sqrt{145}}{-6} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+\sqrt{145}}{2*-3}=\frac{-1+\sqrt{145}}{-6} $
| (2x+10)+(3x+5)=60 | | -71+x=-18 | | 5+0.1x=3(1-0.3x) | | 5+0.1x=3 | | 4x+2=22# | | f(13)=2(13)-1 | | k-9=29 | | 3x^2-274=0 | | 8a-a=54 | | 1/4c+23=-5 | | 2(3x-7)=5x-3 | | 24-6x=12x | | 7=65x=39x=13 | | 5a=3a*16 | | -2+3x=-3=8x | | 15n-25=28 | | 27=20+1/8z | | 3x+4=12x+26 | | -5n-25=-7n-28+3n | | 50-5b=3b-46 | | X+145+y+35=360 | | -5n-25=-7n-28=3n | | -9x=-4+5 | | 3x+x+120+3x+x+120=360 | | 5x+4=−29 | | 15x+15=140 | | 2x+x+15+2x+x+15=360 | | -10-5m(2)=-30 | | X-15+2x-40+x+5=180 | | X2+32x-273=0 | | 8x+260=5x | | 9r-6=180 |