Question

thực hiện phép tính

(x-1)(x+1)(x+2)

Answer 1

\(\left(x-1\right)\left(x+1\right)\left(x+2\right)\)

=\(x^2-1\left(x+2\right)\)

=\(x^2-x-2\)

chúc bn học tốt

Answer 2

\(\left(x-1\right)\left(x+1\right)\left(x+2\right)\)

\(=\left(x^2-1\right)\left(x+2\right)\)

\(=x^3+2x^2-x-2\)

Answer 3

\(\left(x-1\right)\left(x+1\right)\left(x+2\right)\)

\(=\left(x^2-1\right)\left(x+2\right)\)

\(=x^3+2x^2-x-2\)

Answer 4

(x-1)(x+1)(x+2) = (x²-1)(x+2)

= x³+2x²-x-2