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

Why does melting take place beneath the axis of a mid-ocean ridge?

a scale drawing of a movie screen is 21 inches long and 9 inches tall. the actual screen is 30 feet tall a. what is the scale of the drawing? B. find the perim

why was 1946 governor race so unusual

Please help me, I would really really appreciate it!!!

need help with all three questions , feel free to answer what you can .. please help I'm trying to make my mom proud with my final grade

What are behavioral and environmental factors that contribute to one of the health priority issues identified in the local health needs assessment?

Find the quotient. 27,006÷42

Lulu used these steps to solve the equation 8x−2=2(4x−2)8x-2=2(4x-2). Which choice describes the meaning of her result, -2=-4-2=-4? A.The solution is -4-4. B.No

What is the mass in grams of 1.00*10^12 lead atoms

Why does the line -5+8y=8 look like