Plz I rllyneed help on this give answers!

The answer- I believe is 16.

Step-by-step explanation:

So first let's start with the square root of 4. The square root of 4 is 2 since 2x2 is 4.

Next, 45/5 is 9.

And, 125/25 is 5.

When you add all of them-

2+9+5

you get 16

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.