Question

(x-1) (x²+x+1) - (x²-x+1) (x+1)​

Answer 1

= x³+ x²+ x ‐ x² -x ‐ 1 ‐ ( x³ ‐ x² + x + x² - x + 1 )

= x³ + x² + x ‐ x² - x ‐ 1 ‐ x³ + x² - x - x² + x - 1

= 2x² - 2x² - 2

= - 2( answer)

I think you will get it .

And it would be the correct answer for sure.