Question #277ac

2 Answers
Apr 7, 2017

Answer:

#=x^2-4#

Explanation:

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

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

Collect like terms,

#=x^2-4#

Apr 7, 2017

Answer:

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#