Question

underroot 1-x²=4
How come this equation is undefined?

Answer 1

this is not undefined question it is undefined only upto 10 class

HOPE IT WILL HELP U

Answer 2

$\sqrt{1 - x2 } = 4$

so, (1- x²)=(4)²
=16
-x²= 15
x=√15.
=3.87