Question

2log2 15-log2 5+log2 3

Answer 1

\[2\log _{2}15-\log _{2}5+\log _{2}3\]

Answer 2

which of the following is equivalent to
A) 2log2 9
B) 2log2 10
C) log2 18
D) log2 135

Answer 3

@JoannaBlackwelder

Answer 4

ur fast @JoannaBlackwelder

Answer 5

Lol, just saw it. :-) Do you have any thoughts on how to start?

Answer 6

idk i put it on wolfram alpha

Answer 7

Ok, so did that show you the related roperties?

Answer 8

*properties

Answer 9

yes it did

Answer 10

alternate forms

Answer 11

it gave me \[\log(135)/\log(2)\]

Answer 12

Yeah, that is true. Can you tell which answer that is?

Answer 13

ohh i know what to do.

Answer 14

give me a sec

Answer 15

It says you are a human calculator

Answer 16

they both are equal to 7.07

Answer 17

am i right??

Answer 18

= log2 15^2 - log2 5 + log2 3
= log2 225/5 + log2 3
= log2 45 + log2 3

- can you finish this?

Answer 19

I agree with D. :-)

Answer 20

thanks for the help!

Answer 21

If you are a Human Calculator you should be able to do this

Answer 22

You're welcome. :-)

Answer 23

yes @welshfella its 7.07

Answer 24

thers no need to write it as a number
the answer is D log2 135

Answer 25

yes i know i got that

Answer 26

its easier for me in number form