Meesh123 Meesh123

22-04-2015
Mathematics

contestada

How do you do this problem?
Solve by factoring or finding square roots.
x^2-1=0

Respuesta :

belcatya belcatya

22-04-2015

use formula^: a²-b²= (a-b)(a+b)
x²-1=0
x²-1²=0
(x-1)(x+1)=0
x-1=0⇒ x₁=-1
x+1=0 ⇒x₂=1
Answer: x=+-1

Answer Link

Panoyin Panoyin

23-04-2015

x² - 1 = 0
   + 1 + 1
      x² = 1
   x = +1

Answer Link

Otras preguntas

I need help with 6 and 7. Thanks!!

whats the difference between relative dating and absolute dating

Help Science! In an ecosystem, which is NOT a density- dependent limiting factor? A) predation B) parasitism C) competition D) natural disaster

The body loses approximately _____ pints of water a day through sweat, urine, and exhalation.

whats another way to write 8/5 as a fraction ?

percent of discount is 25% and the sale price is 40$ what is the original amount? percent of discount is 5% and the sale price is 57$ what is the original amoun

It took construction company 63 days to complete the buildings. how many weeks did it take ? 1 week = 7days

Kurt is building a rectangular deck. if the dimensions of the deck are 10 ft by 23 ft, what the length of the diagonal of the deck?

Which term best describes the process by which the brain stores information that can be retrieved at a later time? a. memory b. stimulation c. nerve speciali

I'm working on a problem that says: A 4.00 gram sample of a mixture of CaO and BaO is placed in a 1.00 L vessel containing Co2 at a pressure of 730 torr and a t