Question

find the coefficient of x^2 in (x^2-1) (x-2)

Answer 1

-2 is the correct answer

Answer 2

Hello!

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

From observation,
The required coefficient of x² is $\red{\bf{-2}}$

Cheers!