Factorise `(1+3y)^2 + (9y^2 - 1)`

Factorise: (2x +5y)^2-1

Factorise: 4x ^(2) + 9y^(2) + 12 xy

Factorise: 5a (2x -3y) + 2b (2x -3y)

Factorise: 49 (2x + 3y) ^(2) - 70 ( 4x ^(2) - 9 y ^(2)) + 25 ( 2 x - 3y ) ^(2)

Factorise: 3y ^(2) + 14y + 8

Factorise 25x^(2) - 30xy + 9y^(2) . The following steps are involved in solving the above problem . Arrange them in sequential order . (A) (5x - 3y)^(2) " " [ because a^(2) - 2b + b^(2) = (a-b)^(2)] (B) (5x)^(2) - 30xy + (3y)^(2) = (5x)^(2) - 2(5x)(3y) + (3y)^(2) (C) (5x - 3y) (5x - 3y)

Factorise : 16 (2x - y) ^(2) - 24 (4x ^(2) - y ^(2) ) + 9 ( 2x + y) ^(2)

Factorise : 4x^2-9y^2-2x-3y

Factorise 2x^(9)+54y^(9)

Factorise: y ^(2) + y-72