Question

(X-2)(x+1)

Expand and siplify

Answer 1

$\\ \sf\longmapsto (x-2)(x+1)$

$\\ \sf\longmapsto x(x+1)-2(x+1)$

$\\ \sf\longmapsto x^2+x-2x-2$

$\\ \sf\longmapsto x^2-x-2$