9y√(3) and 9√(3y) are like radicals ?
√9= is a raditional #?
√-1 is not a real #?
The Pythagorean Theorem only refers to right triangles.

Question

9y√(3) and 9√(3y) are like radicals ? 
√9= is a raditional #?
√-1 is not a real #?
The Pythagorean Theorem only refers to right triangles.

anonymous · Answer

well the sqrt of 9 is three
you cannot square root negative numbers without using an imagenary number so it is not  a real number

anonymous · Answer

is the first one like radicals?

anonymous · Answer

i do not believe so, because the y in one is being square rooted and in the other it is not.

anonymous · Answer

3√(5) is the symbol of the square root of 5
√ab=√a*√b? is this correct ?

anonymous · Answer

√a-b = √a-√b

anonymous · Answer

are these correct ?

anonymous · Answer

i am pretty positive they are but you might want to get a second opinion.

anonymous · Answer

but 9 is a rational #?

anonymous · Answer

yes because nine can be sqrted and you get 3.