EQUATIONS CONTAINING VARIABLES UNDER ONE OR MORE RADICALS


Note:



Problem 2.1c: tex2html_wrap_inline118

First make a note of the fact that you cannot take the even root of a negative number.

Therefore, tex2html_wrap_inline120 tex2html_wrap_inline122



Raise both sides of the equation to the power 4.

displaymath110

displaymath111



Add 9 to both sides of the equation

displaymath112



Divide both sides of the equation by 4.

displaymath113



The answer is tex2html_wrap_inline126



Check the solution by substituting tex2html_wrap_inline128 in the original equation

for x. If the left side of the equation equals the right side of the

equation after the substitution, you have found the correct answer.



If you would like to review the solution for Problem 2.1d, click on Solution.


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