Write the formulas :
`(i ) ( a + b )^3`
`( ii ) ( a - b )^3`
`( iii ) a^3 + b^3`
`( iv ) a^3 - b^3`

Expand (i) (4a+5b)^3 (ii) (3a-2b)^3

Expand : (i) (4a-5b)^(3) " " (ii) (a+2b)^(3)

If a = 2 and b = 3, find the value of (i) a + b (ii) a^(2) + ab (iii) ab - a^(2) (iv) 2a - 3b (v) 5a^(2) - 2ab (vi) a^(3) - b^(3)

Factroise (i) a^3+b^3+a+b (ii) a^3-b^3-a+b

Expand (i) (5a-3b)^3 (ii) (3x-(5)/(x))^3 (iii) ((4)/(5)a-2)^3

Expand (i) (3x+2)^3 (ii) (3a+(1)/(4b))^3 (iii) (1+(2)/(3)a)^3

Expand : (i) (2x+3y)^(3) " " (ii) (5y-3x)^(3) " " (iii) (2a+3b)^(3) .

Write the following cubes in expanded form: (i) (2x+1)^(3) , (ii) (2a-3b)^(3) (iii) [(3)/(2)x+1]^(3) , (iv) (x-(2)/(3)y]^(3)

Factroise (i) a^3-2sqrt(2)b^3 (ii)1-64a^3 (iii) 8a^3-27b^3