Question

factorise 1331 x³y - 11y³x​

Answer 1

Answer:

Step-by-step explanation:

$=> 1331 x^{3}y - 11y^{3}x / 11\\=> 121 x^{3}y - y^{3}x\\=> xy ( 121x^{2} - y^{2} )\\=> xy ( (11x)^2 - y^{2} )\\\\a^2 - b^2 =(a+b)(a-b)\\\\=> (xy) (11x - y ) (11x + y)$