Answer:c
Step-by-step explanation:
For this case we have the following equation:

From here, we must clear the value of x.
For this, we follow the following steps:
1) We raise both members of the equation to the square:

2) We pass the number 1 subtracting:

3) We pass number 8 dividing
:

We observe that the given equation can be evaluated for the solution obtained.
Therefore, the solution is valid.
Answer:
C) x = 3, solution is not extraneous
Is it a riddle? No dirt is in the hole. But 72ft^3 of air...
Answer:
6 ?
Step-by-step explanation: