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X-1/4X=75
We move all terms to the left:
X-1/4X-(75)=0
Domain of the equation: 4X!=0We multiply all the terms by the denominator
X!=0/4
X!=0
X∈R
X*4X-75*4X-1=0
Wy multiply elements
4X^2-300X-1=0
a = 4; b = -300; c = -1;
Δ = b2-4ac
Δ = -3002-4·4·(-1)
Δ = 90016
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}$$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{90016}=\sqrt{16*5626}=\sqrt{16}*\sqrt{5626}=4\sqrt{5626}$$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-300)-4\sqrt{5626}}{2*4}=\frac{300-4\sqrt{5626}}{8} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-300)+4\sqrt{5626}}{2*4}=\frac{300+4\sqrt{5626}}{8} $
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