JaneDoe911 JaneDoe911

02-05-2018
Mathematics

contestada

(a-1)*(a+1) How does the expansion of this thing works?

Respuesta :

Meow321 Meow321

02-05-2018

This is a simple formula:(a-b)*(a+b)= a^2-b^2
And it goes like this for your example: (a-1)*(a+1)=a*a+a-a-1*1=a^2-1^2=a^2-1

Answer Link

Otras preguntas

Which president first held a Fourth of July celebration at the White House? George Washington John Adams Thomas Jefferson James Madison

Rule for the relationship between certain quantities. Domain Origin Formula Term

What do tire treads, rubber mats, automobile breaks, and tennis shoes have in common. -They reduce friction -they are lubricants -they increase friction -the

What event took place to celebrate the signing of the Declaration of Independence? a. the Liberty Bell was rung b. an effigy of King George III was burned c

question number 4 please help

Which geological features did Sally Ride observe from orbit?

The first official U.S. flag, adopted in 1777, had what component(s) on it? a. Thirteen stars and thirteen stripes b. Thirteen stripes and the words “Don’t Tr

Which battle produced the bloodiest day of the Civil War?

what is the 14 the amendment

This US national park covers 270 square miles, and 95% of it is underwater. Divers and snorkelers explore its shipwrecks and a bright coral reef, home to reef