The correct answer is D

Explanation

Roman Numeral Answer Format

Roman Numeral?: Can the value of ?be??

You could test this answer by substituting??for??in the equation and seeing whether the result is true. But you can also reason this question out without substituting numbers:

If=?, then??is a positive number, because any nonzero number squared is positive.

If?=?, then??is negative.

So??is negative and??is positive.

Therefore,??cannot be?.

Mark Roman numeral??with an “F” for false.

Roman Numeral?: Can the value of??be??

This is a very easy substitution to make:

Roman numeral??is true, so mark it with a “T” for true.

Roman Numeral?: Can the value of??be??

Substitute??for?:

If?=, then?.

Also,?.

Roman numeral??is true, so mark it with a “T” for true.

Check the Answers:

You now know whether each of the Roman numeral statements is true or false:

?is false.

?is true.

?is true.

Find the choice that says only??and?