bhhzd3037 bhhzd3037
  • 02-10-2017
  • Mathematics
contestada

Multiplying by a conjugate gives a rational number because (a + b)(a -
b.= _____.

Respuesta :

kritter1
kritter1 kritter1
  • 02-10-2017
Use foil.

(a+b)(a–b)
a^2 -ab +ab -b^2
a^2 – b^2

Hope I helped :)
Answer Link

Otras preguntas

solve for X somebody help me out
Why is the human brain "Special"?
Jim charges a $25 sign up fee and $15 a month to be in his club. How would it cost to be in the club for 1 year?
what evidence in a quilt of a country supports the statement that shows that moving to a new country is hard?
Define scarcity and explain why scarcity can be considered a fundamental problem in an economy. Write an essay taking a position on the following statement: Sca
help me on this all answer. I will be gratefully to get answer​
Why did Bacon’s Rebellion collapse?
5 sentence Share your reaction on the effects of coronavirus in your daily life as a student​
3. Which of the follow is NOT an unalienable right expressed by Thomas Jefferson in the Declaration of Independence A. Life B. Liberty C. Property D. Pursuit of
Where and when did Constantine hold the first church council for Christianity? I