Question

help pleaseee will fan and give medal

Answer 1

When anything is under a sqrt sign it means that it is greater than or equal to zero
Because if it is negative then it'd be an imaginary number!
So you can build up an inequality like

4-x>=0

And then just solve it! :)
Understood? :)

Answer 2

\[x \le4\]

Answer 3

a was right

Answer 4

Oh sry My bad
Solving the inequality A should be right!!
Haha!! :D
But you got it right? :)

Answer 5

yes thank you:)

Answer 6

:)