Question

I'm stuck on this step, what to do next?

Answer 1

try guessing, it is way easier

Answer 2

5 - x is a perfect square if x = 1, because 5 - 1 = 4
then you get root(4)-root(1) = 2 - 1 = 1
finished

Answer 3

I have no idea what you said up there

Answer 4

in english
the square root of 5 - x is a perfect square ( like 1, 4, 9, 16, etc) if x = 1, because the square root of 5 - 1 is the square root of 4, which is 2
so if x is 1, you get the square root of 4 minus the square root of 1
that is 2 - 1 and 2 - 1 = 1, which is what you want
so x = 1 is the answer

Answer 5

Thank you?