[(4.9)^3+(2.1)^3]/[(4.9)^2-(10.29*1)+4.41]
(4.9)^3+(2.1)^3/(4.9)^2-(10.29*1)+4.41
64a+16b+4c=2
729a+81b+9c=2
2197a+169b+13c=2
f(x)=ax^3+bx^2+cx
f(4)=64a+16b+4c=2
f(9)=729a+81b+9c=2
f(13)=2197a+169b+13c=2
find f(52)
do 7 have a disibility test
formula of pyramid
8788a+676b=8
832a+208b=26
1/x+1 = 2/5
if (2x+3y):(4x+5y)=(4:5) then x:y is
