Question

How do you find restrictions on the variable?? ALGEBRA 2

Answer 1

\[n^4-11n^2+30/n^4-7n^2+10\]

Answer 2

i simplified it and got \[n^2-6/n^2-2\] but i don't know how to find the restrictions?

Answer 3

Restrictions are where the denominator is equal to 0. What was the denominator after you factored, but before you cancelled?

Answer 4

\[(n^2-2) (n^2-5)\]

Answer 5

so the restrictions are 2 and 5?

Answer 6

ok so you just need to set that equal to 0 and solve for x.

Answer 7

n² - 2 = 0 and n² - 5 = 0

Answer 8

right so i would get 2 and 5 positive but i should get the square root?

Answer 9

You should get positive and negative square roots of 2 and 5

Answer 10

or is it \[\sqrt{2} and \sqrt{5}\]

Answer 11

\[x=\pm \sqrt{2},\pm \sqrt{5}\]

Answer 12

The negatives are also solutions

Answer 13

okay i get it thanks peach(: