Topic: Rationalizing the Denominator
Catherine !ttGirlsPl2 started this discussion 7 years ago #80,332
1/sqrt(80)
Should this be...
1*sqrt(80)/80
Because you times the denominator by itself on the bottom and top. You can't times a number outside of the radical by a number inside of the radical so the answer should clearly be 1*sqrt(8) or just sqrt(80). The bottom should be 80.
sqrt(80)*sqrt(80)=6400 and sqrt(6400)=80
Why is this answer wrong?
Anonymous B joined in and replied with this 7 years ago, 1 minute later[^] [v] #935,017
squirt squirt
Catherine !ttGirlsPl2 (OP) replied with this 7 years ago, 42 minutes later, 44 minutes after the original post[^] [v] #935,020
Am I even doing this right at all?Captain Kate Carr joined in and replied with this 7 years ago, 22 minutes later, 1 hour after the original post[^] [v] #935,023
Anonymous D joined in and replied with this 7 years ago, 57 minutes later, 2 hours after the original post[^] [v] #935,030
@935,020 (Catherine !ttGirlsPl2)
Ah, this is more of your poetry? Very avant-garde!
Ah, this is more of your poetry? Very avant-garde!
(Edited 33 seconds later.)
Sheila LaBoof joined in and replied with this 7 years ago, 6 hours later, 8 hours after the original post[^] [v] #935,069
@935,020 (Catherine !ttGirlsPl2)
Looks fine so far - you see, you can put the root 32 into lower radical terms. Root 32 is the same as root 16 times root 2, and you can take the root of 16 and get 4.
Also, in your first post, the root 80 can be written as root 16 times root 5, and again you can then write root 16 as simply 4. It is standard to have the number in the root as small as possible.
Looks fine so far - you see, you can put the root 32 into lower radical terms. Root 32 is the same as root 16 times root 2, and you can take the root of 16 and get 4.
Also, in your first post, the root 80 can be written as root 16 times root 5, and again you can then write root 16 as simply 4. It is standard to have the number in the root as small as possible.
(Edited 2 minutes later.)