Imaginary number is one that when squared gives a negative result. ... With imaginary numbers, when you square them, the answer is negative. They are written like a real number, but with the letter i after them, like this: 23iThe letter i means it is an imaginary number.
        
             
        
        
        
Answer:
radius = √5 = 2.24 to nearest hundredth.
Step-by-step explanation:
(x + 3)^2 + (y + 3)^2 = 5   comparing with the standard form
(x - h)^2 + (y - k)^2 = r^2
-h = 2 so h = -3,  -k = 3  so k = -3.
r^2 = 5 so r = √5.
 
        
             
        
        
        
Sure, each of the following lines.
8x-6+3x-1
11x-6-1
and, 11x-7