Irrational Numbers are numbers that cannot be expressed as a ratio. They are long decimals that never end and do not repeat.
For number 1:
A) Circle -6.123638...
B) Circle -4π
C) Circle √10 /2
D) Circle 3.1415
For number 3:
A) To get rid of the exponent 2, you square root both sides and you get
x= 12
B) 4*4*4 equals 64.
x=4
Hope this helps!