How do I come up with the answer????.......?

Question

a.) If , y=√x +2, fill in the following table for x = 0, 1, 2, 3, 4. Round to three decimal places where necessary.

b) Explain why no negative values are chosen as values to substitute in for x.

Answer 1

Just substitute the value of x in the expression.

x = 1, y = 3
x = 2, y = 3.414
x = 3, y = 3.732
and so on.

We do not chose any negative value of x because there are no real underroots of negative nos.

Hope this helps.

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Answer 2

for a) just plug it in to your calculator...
remember to do the (root of x) first, and then add by 2..
example: x=1 so y=(root of 1)+2
=1+2
=3
for part b), you cannot take the root of a negative number...it is not possible..
hope i helped!

Answer 3

negative numbers don´t have real square roots