If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7+21t-16t^2=0
a = -16; b = 21; c = +7;
Δ = b2-4ac
Δ = 212-4·(-16)·7
Δ = 889
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(21)-\sqrt{889}}{2*-16}=\frac{-21-\sqrt{889}}{-32} $$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(21)+\sqrt{889}}{2*-16}=\frac{-21+\sqrt{889}}{-32} $
| 2=b/5-5 | | 2(x-8)-3=-19 | | 2+30t-16t^2=0 | | 4(3x+5)=-46+30 | | 10x+8=-82 | | 195t-16t^2=0 | | 50-10t-5t^2=0 | | 3v+11=5(v-1) | | |3-x|=|3x+11| | | 7+14t-16t^2=0 | | 235t-16t^2=0 | | 43-4t-5t^2=0 | | 7+36t-16^2=0 | | 2(x-6)=-6x+4 | | -2y-17=7(y+4) | | 47t-5t^2=0 | | 64-3t-5t^2=0 | | 2+5(h+5)=-28 | | 7+28t-16t^2=0 | | 164t-16t^2=0 | | 3+25t-5t^2=0 | | 126t-16t^2=0 | | 36+12x-3=21x-3 | | 145+2x+53=180 | | 2(−4s+2)=−5s−10. | | 3+15t-5t^2=0 | | 9(x)^(2)=441 | | 12n+3=-12 | | 20x/6+-8/6=12 | | 6=(10-z) | | 184-y=239 | | 80=195-x |