How do you simplify #(x-1)(x+2)#?

1 Answer
Barney V.
Jun 27, 2018

#color(green)(x^2+x-2#

Explanation:

#(x-1)(x+2)#
#color(white)(aaaaaaaaaaaaa)##x-1#
#color(white)(aaaaaaaaaaa)## xx underline(x+2)#
#color(white)(aaaaaaaaaaaaa)##x^2-x#
#color(white)(aaaaaaaaaaaaaaaa)##+2x-2#
#color(white)(aaaaaaaaaaaaaa)##overline(x^2+x-2)#

#color(white)(aaaaaaaaaaaaaa)##color(green)(x^2+x-2#

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