Question

400² = I don’t know what this is

Answer 1

Answer:

160000

Step-by-step explanation:

It's just 400 times itself

Answer 2

Step-by-step explanation:

you understand what is the meaning of an exponent ?

or did you not pay any attention in class ?

an exponent indicates how often the base value has to be multiplied by itself.

e.g.

4⁵ = 4×4×4×4×4

9³ = 9×9×9

therefore,

400² = 400 × 400 = 160,000