Express in simplest a+bi form: Square root of 1b + Square root of -1b

Lets simplify 
We know 

We cannot simplify 


So a + ib form is 
Answer:
But of coarse, we need to set one up. 8/9 gallons of paint for 4 birdhouses. Divide 4 by both sides. Our answer is that for each birdhouse, he use about 0.22 gallons of paint. thank me later
Answer:
I am confusion
Step-by-step explanation:
Answer:4000
Step-by-step explanation:
Let them number be a
655% of a=26200
655/100 x a=26200
655a/100=26200
Cross multiplying we get
655a=26200x100
655a=2620000
Divide both sides by 655
655a/655 = 2620000/655
a=4000