If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x2+16x-28=0
We add all the numbers together, and all the variables
x^2+16x-28=0
a = 1; b = 16; c = -28;
Δ = b2-4ac
Δ = 162-4·1·(-28)
Δ = 368
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{368}=\sqrt{16*23}=\sqrt{16}*\sqrt{23}=4\sqrt{23}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(16)-4\sqrt{23}}{2*1}=\frac{-16-4\sqrt{23}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(16)+4\sqrt{23}}{2*1}=\frac{-16+4\sqrt{23}}{2} $
| -9=10-a | | 96÷x=16 | | 6x+4=48-2x | | 5m=4m−3m= | | k/2+-2.1=-0.1 | | y-239=640 | | Y=0.88x-1 | | 5m=4m−3 | | d-479=3 | | Y=88x-1 | | –2c+9=–3c | | n+112=444 | | -0.8k–3.1=-8.3 | | x2-12x+20=-20 | | -5(r+4)=71 | | w+22=42 | | b+39/22=7 | | 5+1x=22 | | z-26=25 | | 510=70+10z | | 8x−10=−2+−8) | | 3t-7=2(4-3t) | | 21f+6=132 | | 2xx3x+40=90 | | p-14=32 | | 5-3p=-1.6 | | g+18=51 | | 27=c-272/21 | | c-41=28 | | c-41=@8 | | 8x+2=90+6x | | F(x)=0.28x |