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Verified Answer :

Answer:

The correct options are 3 and 4.

Step-by-step explanation:

The difference of squares is defined as

\(a^2-b^2\)

In option 1,

\(k^2+81\)

It can be written as

\(k^2+9^2\)

It is the sum of squares, therefore the option 1 is incorrect.

In option 2,

\(P^2-40\)

The number 40 is not a complete square of any number, therefore option 2 is incorrect.

In option 3,

\(n^2-225\)

It can be rewritten as

\(n^2-(15)^2\)

It is the difference of squares, therefore option 3 is correct.

In option 4,

\(t^2-1\)

It can be rewritten as

\(t^2-1^2\)

It is the difference of squares, therefore option 4 is correct.

abbylovesslime7

Answer:  I took the test and here are the correct answers.

Step-by-step explanation:

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