Question

Factorise the expression $3x^{5}y-27x^4{y}^2$

• A. $3x^{4}y(x-9y)$
  
• B. $3x^{4}y(x-3y)$
  
• C. $3x^{3}y(x-9y)$
  
• D. $3x^{4}y(x-9y)$
  

Answer 1

The correct option is A $3x^{4}y(x-9y)$


The given expression is $3x^{5}y-27x^4{y}^2$
Taking out the common factor $3x^{3}y$ we get,
$3x^{4}y(x-9y)$