" 15."a^(3)-(27)/(a^(3))

Factorise : a^(3) -(27/a^(3))

Evaluate : (27)^(-(1)/(3)).(27)^(-(1)/(3))[(27)^((1)/(3))-(27)^((2)/(3))]

Factorise : a^(3) + 27b^(3)

Simplify 27^((1)/(3))[27^((1)/(3))-27^((2)/(3))]

Simplify : 27^(-(1)/(3))(27^((1)/(3))-27^((2)/(3)))

Determine: (i) (2)/(3) of 15 pens (ii) (2)/(3) OF 27 balls (iii) (2)/(3) of 36 balloons

The value of (19^(3)+6^(3)+(3)(19)(6)(25))/(3^(6)+6(243)(2)+(15)(81)(4)+(20)(27)(8)+(15)(9)(16)+(6)(3)(32)+2^(6)) is

Simplify: ((27)^((-2)/(3)))/((27)^((-1)/(3)))