Answer:
a+b = b+a
Step-by-step explanation:
When looking at expressions like this,, you need to remember that the square root of a negative number does not exist in the set of Real Numbers. This means that there is no way to simplify this expression,, making the correct answer to your question Undefined.
Let me know if you have any further questions.
:)
Answer:

Step-by-step explanation:

Adding 9x & 3x gives 12x.

Now taking 4 common from both the terms , we get :-

Answer:
For this case we have by definition, that an irrational number is a number that can not be expressed as a fraction \ frac {a} {b}, where a and b are integers and b is different from zero.
A) , it is rational
B), it is rational
C) , it is rational
D) it is not rational.
Step-by-step explanation:
dddddd its dddd
BESTI ILYSM
No, it is not a valid inference because her classmates do not make up a random sample of the students in the school.