Respuesta :

xke

Answer:

C. -20 and F. 20

Step-by-step explanation:

-20 x -20 = 400

20 x 20 = 400

Danboghiu66

Answer:

C, D, E, F

Step-by-step explanation:

It can also be written as:

Sqrt(a) = a^½

So, for our case:

Sqrt(400)=400^½ or -400^½ or -20 or 20

Each of these numbers multiplied by itself will give you 400.

Answers: C, D, E, F