Meesh123
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 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 Panoyin
  • 23-04-2015
x² - 1 = 0
   + 1  + 1
      x² = 1
       x = +1
Answer Link

Otras preguntas

how would you describe the early colonies in New England?
Amanda rolled a standar number cube what is the probability of rolling a number less than 7.
what does it mean when a reaction has a negative amount of Kj
What killed Qin Shi Huangdi?
help me please i dont understand
How is human changed from animal to so- cial bring ? Describe​
Please fill in the blanks. The words are: qualitative date, quantitative date, bar graph, circle graph, and line graph. Please no fake answers
The most common method of poisoning in children is ________.
Which word has the long-i vowel sound? bit gig high mint
on 10. Which inequality represents the phrase below? a number less than 44 A. x > 44 نه نه x < 44 C. x < 45 D. X = 44