Question

Is the simplified form of 2 √3 - 2√3 rational?
I'm going with no.

Answer 1

wat do u get after simplification ?

Answer 2

i would think 0

Answer 3

yup !

Isn't 0 rational ?

Answer 4

oh thank you very much!
Can i have you help with another?

Answer 5

shoot

Answer 6

btw, 0 IS a rational number !

Answer 7

I have to simplify this:

Answer 8

simplify the last two terms first

Answer 9

\(\large \sqrt{45} = \sqrt{9 \times 5} = ?\)

Answer 10

sqrt of 45 is 6.70?

Answer 11

dont use calculator :/

Answer 12

whats the square root of 9 ?

Answer 13

\(\large 3^2 = 9\), so \(\large \sqrt{9} = 3\)

Answer 14

use that to simplify^

Answer 15

\(\large \sqrt{9 \times 5} = 3\sqrt{5}\)

Answer 16

i don't know how to do sqrt on calculator anyway. Sorry something came up. I'm back

Answer 17

\(\large 3\sqrt{5} - 2\sqrt{7} + \sqrt{45} - \sqrt{28}\)

simplify last two terms :
\(\large 3\sqrt{5} - 2\sqrt{7} + \sqrt{9 \times 5} - \sqrt{4 \times 7}\)

\(\large 3\sqrt{5} - 2\sqrt{7} + 3\sqrt{5} - 2\sqrt{7}\)

Answer 18

next, combine like terms

Answer 19

\(\large 3\sqrt{5} - 2\sqrt{7} + \sqrt{45} - \sqrt{28}\)

simplify last two terms :
\(\large 3\sqrt{5} - 2\sqrt{7} + \sqrt{9 \times 5} - \sqrt{4 \times 7}\)

\(\large 3\sqrt{5} - 2\sqrt{7} + 3\sqrt{5} - 2\sqrt{7}\)

combine like terms :
\(\large 6\sqrt{5} - 4\sqrt{7} \)

Answer 20

^thats the final simplified form

Answer 21

can you be more specific? I can't do sqrt or cube roots at all

Answer 22

that's the one i was going for too!! Thanks.