
Concept explainers
Determine whether the given statement is true or false.

Answer to Problem 99E
The statement " √x+10−√x−10=0 has no solution" is true
Explanation of Solution
Given:
The equation:
√x+10−√x−10=0
Consider the following equation:
√x+10−√x−10=0
Check that the above equation has solution or not.
Isolate the radical first.
Add √x−10 to both sides of the equation √x+10−√x−10=0
√x+10−√x−10+√x−10=0+√x−10
Combine like terms to simplify the expression:
√x+10=√x−10
Further raise both sides to the power of the index which is 2.
Raise power 2 to both sides:
(√x+10)2=(√x−10)2
Simplify the expression:
x+10=x−10
Subtract x from both sides:
x+ 10–x=x–10–x
Combine like terms:
10=–10
Because 10=–10 is a false statement,
Therefore, the equation has no solution.
Hence the statement " √x+10−√x−10=0 has no solution" is true.
Chapter A Solutions
EBK PRECALCULUS W/LIMITS
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