If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-4x^2+8x+23=0
a = -4; b = 8; c = +23;
Δ = b2-4ac
Δ = 82-4·(-4)·23
Δ = 432
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{432}=\sqrt{144*3}=\sqrt{144}*\sqrt{3}=12\sqrt{3}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(8)-12\sqrt{3}}{2*-4}=\frac{-8-12\sqrt{3}}{-8} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(8)+12\sqrt{3}}{2*-4}=\frac{-8+12\sqrt{3}}{-8} $
| 3n2-9n=0 | | 3.14*25=a | | 0.2(x+200)=0.72 | | 7x+9=2x+44 | | a=3.14*5*2 | | x^2+16x+100=11 | | 798=21q | | x+10+5=4 | | 2x-96=0 | | 5/6-2=x+3 | | Z2–2Z+1–2i=0 | | 11=v/5-11 | | Y=-8x+38 | | 3x-9=5x-3,x=6 | | -1/2x+1=0 | | X^2-p^2+2p-1=0 | | 3x+3/4=0 | | 7x–10=3x–2 | | 1.02^t=2 | | 0.7x+1.2=0.8x-2.4x | | 3x+5+2x=2x+26 | | 4(x8)=-48 | | (8x/3)+((x+5)/2))=11 | | 2=x-2x | | d-3.9=8.2 | | x-(2-3x)=-14 | | f+2/3=4 | | y+16=-9 | | -24=-32x | | 63x-14x-49=0 | | 180(n-2)/n=12 | | 12n=180n-360 |