How do you find the product of #(x + 2)(x - 2)#?

1 Answer
Jul 4, 2017

Answer:

#x^2-4#

Explanation:

#"each term in the second bracket is multiplied by each term"#
#"in the first bracket"#

#(color(red)(x+2))(x-2)#

#=color(red)(x)(x-2)color(red)(+2)(x-2)#

#=(color(red)(x)xx x)+(color(red)(x)xx-2)+(color(red)(2)xx x)+(color(red)(2)xx2)#

#=x^2+(-2x)+2x+4#

#=x^2-2x+2x+4#

#=x^2-4#