Time remaining:
how to solve x to a fraction of a power plus or minus x to another fraction = 20

label Algebra
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

x to 1/2 power plus x to 1/4 power = 20

Mar 24th, 2015

x^0.5+x^0.25=20

(x^0.5)+(x^0.5)^0.5=20

let x^0.5=y

y+y^0.5=20

log y +0.5 log y=log20

1.5logy=log 20

log y=1.30/1.5=0.8667

y=7.36

x^0.5=7.36

x=log 7.36/0.5=1.733


Mar 23rd, 2015

Oops, is this a logrithm??  I have forgotten that.  And, I do not know where to find it.

Mar 23rd, 2015

Can it not be solved just algebraically??? Without using logarithms??

Mar 23rd, 2015

NO YOU CANT SOLVE WITHOUT LOGS

Mar 23rd, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Mar 24th, 2015
...
Mar 24th, 2015
Sep 19th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer