Question

1. Factorise : (1) y' - 27
hey guys anwer it plz​

Answer 1

Step-by-step explanation:

1−27a

3

=1

3

−(3a)

3

, Using the formula, a

3

−b

3

=(a−b)(a

2

+ab+b

2

)

=(1−3a)[1

2

+1×3a+(3a)

2

]

=(1−3a)(1+3a+9a

2

)