Question

x³-3x²-x+3 factorise it

Answer 1

$\textsf{ Hello Mate! }$

Concept we will use : Taking values common. Let's see how we can!

${x}^{3} - 3 {x}^{2} - x + 3 \\ \\ {x}^{2} (x - 3) - 1(x - 3) \\ \\ ( {x}^{2} - 1)(x - 3)$

$\boxed{ \textsf{ Answer : ( x sq - 1 )( x - 3 ) }}$

$\texttt{ Have great future ahead! }$

Answer 2

Hello!

$\sf x^{3}-3x^{2}-x+3 \\ \\ \implies \sf x^{2}(x-3) -1(x-3) \\ \\ \implies \boxed{\red{\bf{(x^{2}-1)(x-3)}}}$

Cheers!