If it's not what You are looking for type in the equation solver your own equation and let us solve it.
51+15x-4.9x^2=0
a = -4.9; b = 15; c = +51;
Δ = b2-4ac
Δ = 152-4·(-4.9)·51
Δ = 1224.6
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{-(15)-\sqrt{1224.6}}{2*-4.9}=\frac{-15-\sqrt{1224.6}}{-9.8} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+\sqrt{1224.6}}{2*-4.9}=\frac{-15+\sqrt{1224.6}}{-9.8} $
| -2.7c=5.4 | | 9,000,000-100,000x=4,000,000+400,000 | | (2(x))+(2(3x-5)=38 | | (5-2x)(x+4)=0 | | 8(w+9)=4w+32 | | 5+2n+2=-1 | | 5+2n+3=-1 | | 4x–10–x=8 | | (3x+37)=(6x+7) | | 4s−8=2−12 | | 11=5a+6a | | 4y-26=6 | | ×+6y=28 | | 9h^2=6h-1 | | 5x+15=7x+19 | | -4=3+3m+2 | | n+1+n=13 | | 5^x+5^x=626/25 | | -9(v+4)+2v+6=7v+8 | | 6s-2(s+3)=s-3 | | -16=6+5b+6b | | 2^x+1/2^x=5/2 | | F=7/3(n-54) | | C=8/3(k-38) | | –14=–2+–3c | | 2a+5-6=3 | | 2+6n-5n=8 | | 24.95+5.45x=50.00 | | P=9+1.5x= | | 48x-14=36x+36 | | P+q=6 | | |7x-5|=|5x+3| |