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n in (-oo:+oo)
n*((0.1*(n+3))/0.25) = 1.7 // - 1.7
n*((0.1*(n+3))/0.25)-1.7 = 0
(0.1*n*(n+3))/0.25-1.7 = 0
(0.1*n*(n+3))/0.25+(-1.7*0.25)/0.25 = 0
0.1*n*(n+3)-1.7*0.25 = 0
0.1*n^2+0.3*n-0.425 = 0
0.1*n^2+0.3*n-0.425 = 0
0.1*n^2+0.3*n-0.425 = 0
DELTA = 0.3^2-(-0.425*0.1*4)
DELTA = 0.3^2+0.17
DELTA = 0.26
DELTA > 0
n = ((0.3^2+0.17)^(1/2)-0.3)/(0.1*2) or n = (-(0.3^2+0.17)^(1/2)-0.3)/(0.1*2)
n = 5*((0.3^2+0.17)^(1/2)-0.3) or n = -5*((0.3^2+0.17)^(1/2)+0.3)
(n+5*((0.3^2+0.17)^(1/2)+0.3))*(n-5*((0.3^2+0.17)^(1/2)-0.3)) = 0
((n+5*((0.3^2+0.17)^(1/2)+0.3))*(n-5*((0.3^2+0.17)^(1/2)-0.3)))/0.25 = 0
((n+5*((0.3^2+0.17)^(1/2)+0.3))*(n-5*((0.3^2+0.17)^(1/2)-0.3)))/0.25 = 0 // * 0.25
(n+5*((0.3^2+0.17)^(1/2)+0.3))*(n-5*((0.3^2+0.17)^(1/2)-0.3)) = 0
( n+5*((0.3^2+0.17)^(1/2)+0.3) )
n+5*((0.3^2+0.17)^(1/2)+0.3) = 0 // - 5*((0.3^2+0.17)^(1/2)+0.3)
n = -(5*((0.3^2+0.17)^(1/2)+0.3))
n = -5*((0.3^2+0.17)^(1/2)+0.3)
( n-5*((0.3^2+0.17)^(1/2)-0.3) )
n-5*((0.3^2+0.17)^(1/2)-0.3) = 0 // + -5*((0.3^2+0.17)^(1/2)-0.3)
n = -(-5*((0.3^2+0.17)^(1/2)-0.3))
n = 5*((0.3^2+0.17)^(1/2)-0.3)
n in { -5*((0.3^2+0.17)^(1/2)+0.3), 5*((0.3^2+0.17)^(1/2)-0.3) }
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