If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3.5x^2+126=42x
We move all terms to the left:
3.5x^2+126-(42x)=0
a = 3.5; b = -42; c = +126;
Δ = b2-4ac
Δ = -422-4·3.5·126
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{42}{7}=6$
| (73+30)xx=300=30x | | -2/3r=-32/51 | | 2n+7+2n=7+3n | | 2×n+37=5×n | | 4030-200x=125 | | 1/3/b=b-12 | | -3x+12=-2x+36 | | 12-5x=x+16 | | 2y+37=5-5y | | 9(p-4)=-13 | | 4=8c | | -2x+5+10=3x | | 3+3/2x+4=13 | | 11.24+0.1y=-1.5y+0.68 | | 4.40/323=x/398 | | 4x+5-6x+8=3x-7 | | 3x-55=100 | | -×-1=-1-x | | 19=-23+(2-p) | | x+3/5=-8 | | 6p+2+p-4=8p-8 | | -2x+4=-2x+7 | | 8/45x=8 | | 8r–10=62 | | 13w-3=-4 | | 3w-w-w=18 | | 2(x+6)=x-26 | | 5p-1=5p+3p-8 | | 5x=45+15 | | X=11=4+6x | | 8+6m-8=-18 | | |5-2d|=7 |