Question

Help!
Rationalize the denominator and simplify

Answer 1

multiply and divide the denominator and then simply solve it

Answer 2

Rationalize , means get reed off sqrt in denominator. Can you think of any way how to do that?

Answer 3

do you multiply the bottom to both top and bottom? if that makes sense?

Answer 4

yes, but think well what to multiply it to

Answer 5

I dont understand

Answer 6

i explane:
notice that if we muliply (a+b)(a-b)=a^2+ab-ab-b^2=a^2-b^2
You see that ab terms canceled out, right?

Answer 7

kinda