But, √-4 is not a real number; in fact, the result of <span>√-4 is 2i.
The i is an imaginary number and it basically is a solution for </span><span>√-1
(So, i^2 is = -1).
Since -4 is negative, the square root doesn't exist (in terms of real numbers) just because you can't multiply any two identical numbers to get a negative result.
-2 x -2 = +4 2 x 2 = +4
That is why </span><span>√-4 is <u>NOT</u><u /> considered a real number.
Hope I could help you out! Have a good one, and God bless!</span>
We will translate the given statement in the problem into x + y = 90 x - y = 90 - 86 = 4 where x and y are the angles that are complementary. solving simultaneously, x = 47 degreesy = 43 degrees.