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

Sal’s pizza shop can make 7 pizzas in 15 minutes. At this rate, how many pizzas can they make in 4 hours?

5. Show that the following points are collinear. a) (1, 2), (4, 5), (8,9)

Help Q8-12 please please

Darrell had 13 toy cars. Then he bought 22 cars from the toy store and got 21 cars for his birthday. Darrell gave 5 of the toy cars to his sister and 46 to his

Brainliest if correct 3.2 Cattle and Coal Between 1870 and 1976, Texas cattle were moved along the to Wichita, Newton, and other Kansas towns. A Shawnee Trail B

Pls help me with history

Step 1: Draw an equilateral triangle with sides of two triangles on each Step 2: ___________________. Connect the midpoints and shade the center. Then, shade ou

FIRST ONE GET MARKED BEST! Which question does the process of selective breeding help to resolve? How can the most desired traits in offspring be achieved? How

What is the equation of the line that passes through the point (1,8) and has a slope of 11?

In the context of studying major bodies of our solar system, what category of object does our moon best fit?.