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=80
We move all terms to the left:
4x^2+8x-(80)=0
a = 4; b = 8; c = -80;
Δ = b2-4ac
Δ = 82-4·4·(-80)
Δ = 1344
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1344}=\sqrt{64*21}=\sqrt{64}*\sqrt{21}=8\sqrt{21}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(8)-8\sqrt{21}}{2*4}=\frac{-8-8\sqrt{21}}{8} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(8)+8\sqrt{21}}{2*4}=\frac{-8+8\sqrt{21}}{8} $
| 0.6-x=0.6(x+1) | | 4x+16=28+x | | 0.6-x=0.6x-0.6 | | -219=240-((198)(2x)) | | x/2+2x+3/3=x-1/4-3-2x | | F(x)=200(2)^x | | 3.5x=19 | | -(3y-8+2y)-15y=-4y+6-6(9+y) | | 3(x+12)=8+4x | | 7x-14=336 | | -7+0.5y+11+1/6y=9 | | x-(x*0.2)=2500 | | -8-6y-y=-2(y-10) | | -6+y+6-3y=15 | | -4.5+6y+1-3y=-17 | | 23-0.5x=25-8 | | 2(x-3)=32/8 | | 23-1/2x=25-8 | | 6(5+k)=5(1+k) | | 0.2+2.5y-2.3=-9.8 | | 263=x-(-139) | | 0.2.5y-2.3=-9.8 | | 19.6x=28.2^2 | | 6.2(x+2)+4.2(3-x)=10 | | 0.8=x/1.5 | | x/160=14.5 | | 45x+12000=980 | | 3+b=40.20 | | x(2x+6)=(2x+9)(x-9) | | 7x+1-2x=4-5x-1 | | 7.64=2p | | E-x*15=322.5 |