Question

factorise 3x^2 -27y^2​

Answer 1

Answer:

$3 {x}^{2} - 27 {y}^{2} \\ 3( {x}^{2} - 9 {y}^{2} ) \\ 3( {x}^{2} - {(3y)}^{2} ) \\ 3(x - 3y)(x + 3y)$