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

The chart shows the number of plankton (in millions) detected in sea water off the coast of Alaska at varied water temperatures.

Which principle is used to make hydraulic machines work

Directions: Use the Law of Sines to find each missing side or angle. Round to the nearest tenth.

Which of these choices show a pair of equivalent expressions? Check all that apply

In a circle with radius 8, an angle intercepts an are of length 23. Find the angle in radians in simplest form.

calculate the change in enthalpy for the chlorination of propane

The graph below shows how natural processes and human activities affect climate. An illustration displaying,how natural processes and human activities affect th

what is anxiety to you? { I want several people to answer} message me if you need to talk (:

Even though chiropractic care and hydrotherapy are sometimes used for musculoskeletal issues, which alternative treatment is also sometimes used for treating mu

What is your biggest concern or fear about starting a new career? What resources at UMA have you used to better prepare for your future career?