EQUATIONS CONTAINING VARIABLES UNDER ONE OR MORE RADICALS
Note::
Problem 2.2a:
Answer:
Solution:
Since the index of the radical is even, the quantity under the
radical cannot be negative and
5x-11=36
5x=47
Check the solution by substituting 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.
Left side:
Right side: Since the left side of the original equation equals the right side of the
original equation when you substitute , the answer is correct.
You can also check the answer by graphing
(the left side of the original equation minus the right side of the
original equation). The solution will be the x-intercept. The x-intercept
is
If you would like to review the solution to problem 2.2b,click on problem
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