Final answer:
The simplified form of x-12 is A. x - 12, as it is already in its simplest form.
Step-by-step explanation:
The simplified form of the expression x-12 is indeed x - 12, indicating the subtraction of the constant 12 from the variable x. This form is considered the simplest representation, requiring no additional simplification. The expression x signifies a variable, and the term -12 represents the constant being subtracted from it. It's crucial to note that alternatives like -x - 12, 1-12, and 1+12 alter the original expression's value, thereby not maintaining equivalence with x-12. By adhering to the basic principles of algebra, the expression x-12 stands in its most concise and unambiguous form, depicting a straightforward subtraction operation.
The Question is incomplete. The complete question is
Which is the simplified form of x-12?
A. x - 12
B. -x - 12
C. 1-12
D. 1+12