EQUATIONS CONTAINING VARIABLES UNDER ONE OR MORE RADICALS


Note:




Problem 2.1a: tex2html_wrap_inline111


First make a note of the fact that you cannot take the square root of a

negative number. Therefore, tex2html_wrap_inline113 tex2html_wrap_inline115 tex2html_wrap_inline117 tex2html_wrap_inline115 tex2html_wrap_inline121



Square both sides of the equation.

displaymath103

displaymath104



Add 11 to both sides of the equation

displaymath105



Divide both sides of the equation by 5.

displaymath106



The answer is tex2html_wrap_inline125



Check the solution by substituting tex2html_wrap_inline127 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.



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