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0.25n+3=1+0/75n
We move all terms to the left:
0.25n+3-(1+0/75n)=0
Domain of the equation: 75n)!=0We add all the numbers together, and all the variables
n!=0/1
n!=0
n∈R
0.25n-(0/75n+1)+3=0
We get rid of parentheses
0.25n-0/75n-1+3=0
We multiply all the terms by the denominator
(0.25n)*75n-1*75n+3*75n-0=0
We add all the numbers together, and all the variables
(+0.25n)*75n-1*75n+3*75n-0=0
We add all the numbers together, and all the variables
(+0.25n)*75n-1*75n+3*75n=0
We multiply parentheses
0n^2-1*75n+3*75n=0
Wy multiply elements
0n^2-75n+225n=0
We add all the numbers together, and all the variables
n^2+150n=0
a = 1; b = 150; c = 0;
Δ = b2-4ac
Δ = 1502-4·1·0
Δ = 22500
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{22500}=150$$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(150)-150}{2*1}=\frac{-300}{2} =-150 $$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(150)+150}{2*1}=\frac{0}{2} =0 $
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