SOLUTION: For what values of the variable does the following expression make sense: a. √8c b. √−10b

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Question 1134252: For what values of the variable does the following expression make sense:
a. √8c
b. √−10b
Found 2 solutions by Boreal, MathLover1:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt(8c) is valid for c>=0
sqrt (-10b) is valid for b<=0

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
For what values of the variable does the following expression make sense:
a. sqrt%288c%29
The domain of the square root function is (0, infinity).
so, sqrt%288c%29 will make sense only if c%3E=0
b. sqrt%28-10b%29+
if b is negative or b%3C=+0, than+-10b will be positive and sqrt%28-10b%29+ will make sense