Question #277ac

2 Answers
Apr 7, 2017

=x^2-4

Explanation:

Foil (x-2)(x+2),

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

Collect like terms,

=x^2-4

Apr 7, 2017

Last term is -4

Explanation:

The "Last" term in the the product will be the product of the two last terms in each bracket.

It is not necessary to find the whole product.

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

color(red)(-2 xx+2) = -4