laurengirl12 laurengirl12
  • 04-07-2016
  • Mathematics
contestada

Expand these:

a. (x + 2)(x - 2)

b. (y - 4)(y + 2)

Respuesta :

tinmann tinmann
  • 04-07-2016
a. USE FOIL 
* first term squared, plus of minus, double the product, plus the last term squared 
^ A mathematical hymn which my math teacher taught me.

So:

a. x^2 - 2x +2x - 4
This can simplify to 
x^2 + 4 

b. y^2 + 2y - 4y - 8
This can simplify to 
y^2 - 2y - 8


 
Answer Link

Otras preguntas

Find the surface area of this design
Adults who have an excess of body fat may be considered
What is the difference between layering and terracing? A. In layering, materials such as leaves can't be reversed to reveal different colors on t
metals share a common property they
Define Dramatic Irony. Give an example of dramtic irony from any book, story or movie.
What traditional Peruvian hat is fastened to the head with straps of beaded and embroidered cloth? A. huipil B. montera C. pollera
The square of the sum of a number and 4 is 36
Which statement is accurate? A. A gene consists of two traits. B. An allele is one form of a gene. C. Most alleles have many genes. D. An
Help! I don't really understand how to do this, can someone explain?
Specialized cells protect the human body from disease causing microbes by