Question

Solve: log2 (x) +log2(x+7) =3
(2 is the base)

Answer 1

do you know the logarithm rules?

Answer 2

Yeah i am just really bad at logarithms

Answer 3

ok you know that
\[ \log_a (xy) = \log_a x + \log_a y\]

Answer 4

yes i do
i have done that part but i dont know how to continue it from there

Answer 5

ok so\[\log_2 x(x+7)=3\]

Answer 6

Whenever you have\[\log_b A =x\]that means\[b^x=A\]

Answer 7

yeah okay so, do you multiply the x(x-7) ?

Answer 8

yep

Answer 9

how about this question, 4logx(2) = log 2(x) [x and 2 are the bases]
is it like this,
logx(2^4) = log2 (x)
log2(2^4)/ log 2(x) = log 2(x)
4/log2(x) = log2(x)

how do i continue from here ?