Meh. This starts off with an invalid premise: the square root of a positive number (expression) is NOT restricted to non-negative values. X is also equal to -2: (2 - (2 + 2)^½)^½ ==> (2 + 2)^½ ==> -2 [taking the negative square root of 4 in all cases.
Your teaching is great. Well done
Thank you! 😃
این خیلی راحت بود
حتی ذهنی هم میشد حساب کرد
خیلی خوبه
x = 1
Very nice! ❤
l' ensemble des solutions est
(2-x)sup ou =0 et 2-√(2-x) soit sup ou =0
D= ]-&,-2]
Very nice! ❤
Meh. This starts off with an invalid premise: the square root of a positive number (expression) is NOT restricted to non-negative values. X is also equal to -2: (2 - (2 + 2)^½)^½ ==> (2 + 2)^½ ==> -2 [taking the negative square root of 4 in all cases.
In verification we can't take negative value of a square root so -2 cannot be a solution ❤
the range of the square root function is all nonnegative real numbers