If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X(X-28)=124
We move all terms to the left:
X(X-28)-(124)=0
We multiply parentheses
X^2-28X-124=0
a = 1; b = -28; c = -124;
Δ = b2-4ac
Δ = -282-4·1·(-124)
Δ = 1280
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}$$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1280}=\sqrt{256*5}=\sqrt{256}*\sqrt{5}=16\sqrt{5}$$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-28)-16\sqrt{5}}{2*1}=\frac{28-16\sqrt{5}}{2} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-28)+16\sqrt{5}}{2*1}=\frac{28+16\sqrt{5}}{2} $
| 10-(2+1+5)=t | | b*5=20;b=3 | | -6n-2n-7=20+n | | 10f+10=3f-8+10f | | a-2+3=-7 | | 4x-(2x+5)=19 | | 3601.50+x=12,000 | | z/16=10 | | -1=4+z5 | | 2x-‐6=2(x-‐3 | | -54=x-9 | | v-32=-40 | | 4(x−1)=1/2x(x−8) | | 10-4m=-10-8m+4 | | 5(x+2)^2-90=0 | | 36=5w+2(w+4) | | (D^6+16D^4)y=0 | | x+16=74 | | 3m2–72m–75=0 | | d-8=23 | | 2.5(w-9)-3.2=-8.7 | | s/13=14 | | (D^6-16D^4)y=0 | | (17x+18)=(16x-27) | | g-3=7;g11 | | 44-7·x-3=13 | | 191=83-y | | 3m+10=m+50 | | 3+-z=9 | | ½(-4x+20)+3x=12x+54 | | c-7=23 | | 280=128-x |