If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7(-3x^2+11x+4)=0
We multiply parentheses
-21x^2+77x+28=0
a = -21; b = 77; c = +28;
Δ = b2-4ac
Δ = 772-4·(-21)·28
Δ = 8281
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{8281}=91$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(77)-91}{2*-21}=\frac{-168}{-42} =+4 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(77)+91}{2*-21}=\frac{14}{-42} =-1/3 $
| 3x^2+4x-9=2x^2-5 | | 5b+5(b-7)=2b-19 | | -4h+3=-4+3h | | 6=q-4 | | 5a+3=8a-3 | | x+(3x+4)2=24 | | 6x+3+6x=11x+5 | | 3(8n+4)=-204 | | 4+7j=-5j-8 | | 9x^2-7x-16=0 | | 2x-236=-14x+84 | | j-874=49 | | -2=u/1 | | 6(7p-6)=132 | | 77x+28=21x^2 | | 14h=616 | | x+1234+(x×x×x)=84681+3*(123) | | -2p=-p-10 | | -5(2-x)=-10+5 | | y-8/18=y+4/12 | | 130=x+18/100x | | 8p-6p=12 | | -10+3g=-7g | | (3x-6)/3=(2-4x)/2 | | 10v/5=-30 | | s-1=45 | | 3(7x-7)=48 | | 3/2x^2-7/4x=5/4 | | 63=-9h | | 8-5a+6=-1 | | x+1234×(x×x×x)=84681×3×(123) | | 10v/5=30 |