Is 4 + 7i , rational, irrational or complex ?

complex

Step-by-step explanation:

a + bi is the format of complex numbers, which are those that contain a real and an imaginary component. Rational and irrational numbers are all real and cannot contain i unless it is to an even power (in which case it becomes -1 or 1).

step-by-step explanation:

in the absence of parentheses, i will have to make some assumptions:   i interpret your (3x+5/y^6)(4y^3/5)​ to mean:

3x + 5     4y^(3/5)       (3x + 5)(4)

* =

    y^6             1               y^(6-3/5)

if this is not what you expected, repost your question using parentheses to indicate whether you meant

4y^3

    or   4y^(3/5)

    5

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.