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Mathematics 12 Online
OpenStudy (czarluc):

(2^x)3x+3x=1

OpenStudy (solomonzelman):

\(\large\color{black}{ (2^x)3x+3x=1 }\) like this, right?

OpenStudy (czarluc):

yes

OpenStudy (anonymous):

2^x)3x+3x=1=3x(2^x+1)

OpenStudy (solomonzelman):

yes.

OpenStudy (anonymous):

is this one that may be useful?

OpenStudy (solomonzelman):

\(\large\color{black}{ 3x(2^x+1)=1 }\) looks certainly better.

OpenStudy (czarluc):

How did that happen?

OpenStudy (czarluc):

nvm I got it

OpenStudy (anonymous):

yes. now we have to divide both sides by 3x, right?

OpenStudy (czarluc):

what happens next?

OpenStudy (solomonzelman):

\(\large\color{black}{ 3x(2^x)+3x(1)=1 }\) \(\large\color{black}{ 3x(2^x+1)=1 }\) like this.

OpenStudy (czarluc):

Then it would be like this? (2x+1)=1/3x

OpenStudy (anonymous):

do you know what to do next? I'm little confused in it

OpenStudy (anonymous):

that does not help your cause, matter of fact it makes it worse

OpenStudy (anonymous):

so what's your version of solvong this equation?

OpenStudy (anonymous):

eyeball it

OpenStudy (czarluc):

huh?

OpenStudy (anonymous):

zero works by inspection

OpenStudy (anonymous):

what do you mean by eyeball it?

OpenStudy (anonymous):

@satellite73

OpenStudy (anonymous):

maybe i misunderstood the question

OpenStudy (czarluc):

but 0 won't work since 3(0) would be zero too

OpenStudy (anonymous):

what if we try to factor this expression 3x*2^x+3x-1=0

OpenStudy (anonymous):

if this is the question \[3x\times2^x+3x-1=0\] then i have no idea how to solve it

OpenStudy (solomonzelman):

http://www.wolframalpha.com/input/?i=3x%282%5Ex%2B1%29-1%3D0 this is the result from wolfram, but it is just the result, not the process.

OpenStudy (anonymous):

how about substitution. we will get at one answer and then will write it as (x-a)(....)=1

OpenStudy (anonymous):

I can try to find one

OpenStudy (czarluc):

So the answer is -1?

OpenStudy (solomonzelman):

it is not -1, that doesn't work.

OpenStudy (anonymous):

it doesn't look like answer -1, because 2^(-1)=0.5 and it will not result 1

OpenStudy (czarluc):

0.1?

OpenStudy (anonymous):

I will get a graph for function f(x)=.....-1 and we will see if 0.1 maybe the zero of function

OpenStudy (czarluc):

if you look at the reply of solomon ^ it is there

OpenStudy (anonymous):

OpenStudy (anonymous):

looks like it might be 0.1

OpenStudy (anonymous):

do you have mulptiple choice question?

OpenStudy (czarluc):

no, its only a blank question

OpenStudy (czarluc):

but nevertheless, it's ok now

OpenStudy (anonymous):

ok then. Check by substitution, sorry nobody could get a process in all only answer.

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