Question

Rationalize the denominator and simplify.
https://media.glynlyon.com/g_alg02_ccss_2013/7/q11169.gif

Answer 1

multiply nr and dnr by sqrt(5) then solve it

Answer 2

What's nr and dnr?

Answer 3

numerator and denominator

Answer 4

15 x 5 and 3 x 6?

Answer 5

15*sqrt(6)*sqrt(5)/(3*sqrt(5)*sqrt(5))
15*sqrt(30)/15

Answer 6

did u get it??

Answer 7

im trying to figure out what i should multiply. 15 x 6 and 3 x 50 or 15 x 3 and 6 x 5

Answer 8

numerator is 15=sqrt(6). multiply it with sqrt(5) . that gives 15*sqrt(30)
Similarly denominator is 3*sqrt(5). multiply with sqrt(5). that gives 3*5=15

Answer 9

=15*sqrt(30)/15= sqrt(30)

Answer 10

yes

Answer 11

i understand better now.

Answer 12

is it 1+2

Answer 13

what??
1+2??

Answer 14

I had divided 15 and 30 by 15

Answer 15

you are forgetting sqrt for 30

Answer 16

http://www.mathsisfun.com/algebra/rationalize-denominator.html

Answer 17

so what should i do

Answer 18

?

Answer 19

hello