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X-5/100X=115
We move all terms to the left:
X-5/100X-(115)=0
Domain of the equation: 100X!=0We multiply all the terms by the denominator
X!=0/100
X!=0
X∈R
X*100X-115*100X-5=0
Wy multiply elements
100X^2-11500X-5=0
a = 100; b = -11500; c = -5;
Δ = b2-4ac
Δ = -115002-4·100·(-5)
Δ = 132252000
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}$$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{132252000}=\sqrt{400*330630}=\sqrt{400}*\sqrt{330630}=20\sqrt{330630}$$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-11500)-20\sqrt{330630}}{2*100}=\frac{11500-20\sqrt{330630}}{200} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-11500)+20\sqrt{330630}}{2*100}=\frac{11500+20\sqrt{330630}}{200} $
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