Question

solve logarithms:
log -m+2=4

Answer 1

My friend sent me this question and he understands not on how to solve this. I myself know nothing of these sort of problems. If I can help him, he will get me a slushie/Icee. :) I really want one. So, please can you assist us in solving this?

Answer 2

We would like to help you, but your question is unclear.
Can you describe us, what the first term is ??
(or maybe post a screenshot of the entire question)

Answer 3

the question is unclear :/

Answer 4

Okay... give me a second

Answer 5

All it says is to solve the equation.

Answer 6

yeah, we know that you need to solve that equation, but how can we help you if we don't understand what the first term is ?
is it just \(\log m\) ? why is that - sign there ?

Answer 7

you can also draw out your question, by using 'Draw' tool.

Answer 8

ok, so first subtract 2 from both sides to isolate the log term, what would you get ?

Answer 9

log-m=2

Answer 10

yes.

Answer 11

yes,
now use the property that
\(\huge \log (a)=b \implies a= 10^b \)
so, what about
\(\log (-m)=2\)
?

Answer 12

Okay, umm... This is for a friend of mine. I, myself, do not understand what this is. can you explain?

Answer 13

i just did.
just replace a with -m and b with 2

Answer 14

and if your friend is learning logarithms, he would know this :
\(\huge \log (a)=b \implies a= 10^b\)

Answer 15

This is what my friend wrote. :
log(-m)=10(2)
log(-m)=20
This is what I write:
log(-m)=-2 ==> 10^-2

Answer 16

.01?

Answer 17

log (-m) isn't -2, right ? its +2

Answer 18

okay.

Answer 19

let me try with a drawing too,
when base of the logarithm is not specified, its 10
so,

got that ?