If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-3x^2+9x-15=0
a = -3; b = 9; c = -15;
Δ = b2-4ac
Δ = 92-4·(-3)·(-15)
Δ = -99
Delta is less than zero, so there is no solution for the equation
| 25x=2x+18 | | x-41=52 | | 3^2-9x+1=0 | | X+2=x-14 | | -2(x-4)-5=-7x+5(x+7) | | 3x-2(5x-7)+9=1-x | | 5x+4=2x-20 | | 11-6x=31/10x | | 2(2a-5)/9=2-5a | | 40/x=4/5 | | x-14=78 | | x-43=2 | | 2x-9-x+5+8x+9x-5x-3x+3=10x-1;119 | | -1/2y+15/4=25/16+2y | | y-14=27 | | ^=3a | | x-77=6 | | x+.7=1.7x+4.62 | | 28+x=94 | | 15(x–1)=5x | | p=2L+2W;L=82,W=147 | | 6=2/7w+8 | | x-1.7x=3.92 | | -2(z+3)-12=-2-4(z+2) | | 15x=5(x+1) | | 3t=2+3 | | 4y+3y=-5 | | x+.07=1.7+4.62 | | 2x-13=x+5 | | 4r+16/8=2r-2/2 | | -4d-5=-5d+1 | | 1-x-84x^2=0 |