ROUNDING UP 1862
2/3-1/2
20r^6+96.8r^5+183.88r^4+167.376r^3+66.6752r^2+3.5344r−3.944096=0
$64a^{2}$ +5a+25=0
$64a^{2}$ -91a+25=0
what is equivalent to 1/3
simplify 25/40
Solve this generating function Ar= 2,5,19,35
5(x+3)=3x-4
S_n= T_(1 [((1-r^n ))/((1-r) )] )
