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 most common type of hallucination in schizophrenia is

URGENT, PLEASE ANSWER. Joshua was taking a trip to an amusement park with his family. To get his family in, his parents had to purchase two adult tickets, one

What is the specific gravity of a concentrated sulfuric acid solution? A. 1.419 B. 1.000 C. 1.835 D. 1.263

Which expression is equivalent to 1−23−3 ? −27 −9 9 27

Often, it is difficult to name a home country for a(n) ________ business

true or false generally Republicans stood for a strong federal government

A principle of learning strategies that teachers often neglect is to a. expose students to a number of different strategies b. emphasize self-regulatory (condit

The tea act allowed the east india company to sell tea without a tax. why did this anger the colonists?

The work shows how to use long division to find (x2 + 3x –9) ÷ (x – 2). What will be the remainder over the divisor?

Nandeville and Henning are 10 miles apart. On a map, the two cities are 2 inches apart. How many miles does 1 inch represent on the map?