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

Candice’s first job was at the grocery store making deli food. While in culinary school, she worked part time in a restaurant kitchen, and after finishing schoo

Trevor Noah Book Born and crime

One thousand tickets are sold at $1 each for a color television valued at $350. What is the expected value of the gain if a person purchases one ticket? a) $0.3

How do you write this equation as an addition equation. -8 - 4 is what?

Trevor Noah Book Born and crime

what is the difference between name calling and glittering generalities

Scrieti fractiile urmatoare sub forma ireductibila apoi aduceti fractiile la un numitor coming

definition for new south

(3x+2)(4x-5) foil method

18. In rectangle ABCD, length AB measures (2x - 5) cm while length CD measures(5x-14) cm. If the breadth BC of the rectangle measures (1.6x - 3.9) cm, then find