đđđ đĽââ
[ln(đĽ+3)âln (đĽ)]
5x-y=20
[1-{1-(1-n)^-1}^-1]^-1
(x^4/y^3)^-2
find the terms of a geometric sequence
(x^4/y^3)-2
Calculate 10, âŚ+ 4n+6 for n= as odd number less than 12
25,30,45,54,?