Step-by-step explanation:
x² + 9= 0
(move internode)
x²= -9 (heve no solution and parentheses )
if the number is negative and we are asked to find the root of n (if n is an even number). then it has no solution. example that have solution:
x²= 9
x = √9
x= 3
because, (3)²= (3) × (3)
= 9
or it could be: (-3)²
= 9
You must use parentheses if you want to convert it to the square root
2. x² - 4= -11
(move internode)
x²= -11 + 4
x²= -7 (haven't no solution because 7 is not the number of the square root and there are no brackets)
