The first answer is 3, the second one is 1, & the third one is (-8,4)
Answer:
None of them are irrational.
Step-by-step explanation:
An Irrational Number is a real number that cannot be written as a simple fraction.
Therefore:
-4 can be written as -4/1
2/9 is already in fraction
8.26 can be written as 826/100
11 can be written as 11/1
None of them are irrational.
However numbers like
are irrational as they can not be represented as fractions.
Answer: 
Step-by-step explanation:

if it matters then simply further...
4 + \sqrt{4i} = 
Answer:
204
Step-by-step explanation:
17 x 12=204
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AND THEN WHAT