How do you find the product of (x + 2)(x - 2)(x+2)(x−2)?
1 Answer
Jul 4, 2017
Explanation:
"each term in the second bracket is multiplied by each term"each term in the second bracket is multiplied by each term
"in the first bracket"in the first bracket
(color(red)(x+2))(x-2)(x+2)(x−2)
=color(red)(x)(x-2)color(red)(+2)(x-2)=x(x−2)+2(x−2)
=(color(red)(x)xx x)+(color(red)(x)xx-2)+(color(red)(2)xx x)+(color(red)(2)xx2)=(x×x)+(x×−2)+(2×x)+(2×2)
=x^2+(-2x)+2x+4=x2+(−2x)+2x+4
=x^2-2x+2x+4=x2−2x+2x+4
=x^2-4=x2−4