If it's not what You are looking for type in the equation solver your own equation and let us solve it.
12t^2+3=0
a = 12; b = 0; c = +3;
Δ = b2-4ac
Δ = 02-4·12·3
Δ = -144
Delta is less than zero, so there is no solution for the equation
| 5x+1+4x+8=90 | | y´´´´-6y´´+12y´-8y=0 | | 17=-10+3/4z | | 1/4(x^2+5x+4)=0 | | 3x+200=13 | | 2x+1+5+x=90 | | 2X/5-4=x+3/2-3/4 | | 1/4^2+5/4x+1=0 | | -1/2+6/7x=-16/14 | | 38-(x+9)=7x-3 | | 20x+20-x=16x-16 | | (6x8)-5=6(8x5) | | 2x+1=8x-4 | | 2x(4x-7)=29 | | 4-2(4+5x)=-84 | | (5x+3)=(2x+7) | | 4n+1=21;(0,3,5) | | 120+0.30m=80+0.50m | | 3x²-2x=133 | | 10b-20=180 | | (5x+3)=(2×+7) | | 3n+5=180 | | 2x²-56=288 | | -0.5y+38.5=X | | 48/3x=17/2x+120 | | 6=1/5w+7/5w-7 | | y-(-6)=-15 | | X+2=-4+x | | 2y+16-10=30 | | 9(9)-8(6+2)=x | | 1-1/5x=175 | | -37(y-69)=y+(-99) |