If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5n^2+7n-6=9
We move all terms to the left:
5n^2+7n-6-(9)=0
We add all the numbers together, and all the variables
5n^2+7n-15=0
a = 5; b = 7; c = -15;
Δ = b2-4ac
Δ = 72-4·5·(-15)
Δ = 349
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{349}}{2*5}=\frac{-7-\sqrt{349}}{10} $$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{349}}{2*5}=\frac{-7+\sqrt{349}}{10} $
| 4/n=15 | | X+1/3x1/3x-4+2(1/3x-4)=72 | | 5x+25(x-3)=105 | | 4x+36=x(x+20) | | 9b=36= | | -9(5c+4)=24 | | -11=-7.2-7a | | X+1/3+1/3-4+2(1/3x-4)=72 | | 4^n=65535 | | 8(n+5)=n+ | | 15=w-7 | | -3.8=-7a | | 12=2b+4 | | 3.75-6x=6.90 | | 8b^2+1b+15=10 | | 3.75+6x=6.90 | | 5(h+83)=–10 | | 2(8y-6)=-22+7y | | 3067.50=3000.00(1+0.75r) | | k-120=300 | | 6+5y=30 | | 25=o3 | | .10x+.22x=x | | 2/3(9x-15)=-34 | | 10t+20=70 | | 8x²+3=3x²+190 | | x+5+130=180 | | -0.9y=2.5 | | (x+0.6)(x+2.7)=0 | | .10x+.22x+532.41=x | | –3q=9 | | X+1/3+1/3x-4+2(1/3x-4)=72 |