cathyg: is there a way to solve this with Algebra
2^x=x+3 I know I can set both sides =y and do 2nd calc intersect on a graph calc. …need Alge

Question

amistre64 · Answer

logarithms are algebra

anonymous · Answer

Unfortunately, there is no known method for finding exact solutions to such an equation as this.  The vast majority of equations, in fact, cannot be solved analytically.

amistre64 · Answer

log(2^x)=log(x+3)

x log(2) = log(x+3)

log(2) = log(xrt(x+3))

2 = xrt(x+3)  .... that doesnt help does it :)

anonymous · Answer

OK. I just wasn't sure abtrehearn. 
amistre64- I tried that!

amistre64 · Answer

graph it as:  2^x -(x+3) = 0

anonymous · Answer

did that ,got 2 answ. just wanted to know about alge

anonymous · Answer

Thanks for your  help. Is there a way to know if an equaiton cant be solvedd with algebra?

amistre64 · Answer

the wolfram uses some complicated functions; so unless you know alot of the higher maths, you might just be stuck

amistre64 · Answer

if your interested, check it out :) http://www.wolframalpha.com/input/?i=2^x+-%28x%2B3%29

anonymous · Answer

OK  good deal. just stick w/ the graphing approach but may check out website too