If it's not what You are looking for type in the equation solver your own equation and let us solve it.
9x^2-1-71x=0
a = 9; b = -71; c = -1;
Δ = b2-4ac
Δ = -712-4·9·(-1)
Δ = 5077
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{-(-71)-\sqrt{5077}}{2*9}=\frac{71-\sqrt{5077}}{18} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-71)+\sqrt{5077}}{2*9}=\frac{71+\sqrt{5077}}{18} $
| x2+5=28 | | 8(x-1)^2=32 | | -4x+6(x+2)=20. | | 50−5x=5x−50 | | 10+.30(x-250)=13 | | 7x-16=-4x+6 | | 10=s | | 12x^2+18x-90=0 | | x^2+((2/3)x-10)^2=1000 | | 70=-7d | | 5x+(2)/(5)=x-(1)/(10) | | 1/3y+6=-2/3y | | 1v-2=3 | | x^2+x=275 | | 9x^2-45x+500=0 | | 14z+(-7)=7 | | 7+6=2x+17 | | x^2+4/9x-1100=0 | | 5-x+8=x-9 | | x4+3=24 | | 1/2x+1=100 | | 9x+4=30x-72 | | 10=6k | | 9x+4=30×-72 | | y/12-1/6=1/2 | | 3x+34=58 | | -0.5x=-7 | | 9x-13=90 | | 12s=7 | | 6x-7=2x+103 | | (x-5)/3=(x-3)/5 | | 5x^2+19x-15=0 |