Question

Factorise : 2x² - x - 1​

Answer 1

Step-by-step explanation :

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

Answer 2

Kindly refer the attachment ☺️☺️☺️☺️