If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-9=-10x-4.9x^2
We move all terms to the left:
-9-(-10x-4.9x^2)=0
We get rid of parentheses
4.9x^2+10x-9=0
a = 4.9; b = 10; c = -9;
Δ = b2-4ac
Δ = 102-4·4.9·(-9)
Δ = 276.4
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{-(10)-\sqrt{276.4}}{2*4.9}=\frac{-10-\sqrt{276.4}}{9.8} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(10)+\sqrt{276.4}}{2*4.9}=\frac{-10+\sqrt{276.4}}{9.8} $
| 0=-600(2)+b | | 3m+10=5(2m-5) | | x/4+26=14 | | 3x5/x×8x=100 | | -5r=-(r+5)-3r | | 22−3(3x+1)=−x+45 | | 28=-6(6)+b | | 7•x+5=26 | | 18x+3=51 | | 12x1.5=18 | | 0=-6(6)+b | | 3(x-6)/4=5(3x-2)/3 | | 8-1/3(12x+42)-x=-61 | | −2z +35= 4242 | | 8+5n=2n-7 | | 11+6x=11x+16 | | 8-5c=-27 | | R+8=4r-16 | | 6.1x+2=4.1x+10 | | 6x-25+2x=9 | | 21=12r | | N-4(4n+3)=-72 | | 5{r+9}-2{1-r}=1 | | 56=H(2d+4 | | 11x+60=30x | | 3x=4(x+2)=9+3x | | -36=-2x-4+5x | | F(60)=15+0.5x60 | | -7(3k-3)=9k-39 | | M+16m=9 | | -14-a=8 | | 3^2x+1-28(3^x-1)-1=0 |