Question

If√5 - x = 4, then x = ?

Answer 1

-11

Step-by-step explanation:

When we subtract a negative number from another number, either positive or negative, we actually add those numbers up:

`√(5 - x ) = √(5 - ( - 11) \\ \\ √(5 + 11) = √(16) \\ \\ √(16) = 4`

When we add 5 and 11 up, the sum will be 16, which is the second power of 4. Therefore, the answer is -11.