Which of the following must be true for and expression to be a difference of two squares?
a. both coefficients are perfect squares.
b. there are only two terms.
c. both terms have negative coefficients.

The correct options are:

(A)Both coefficient are perfect squares.

(B)There are only two terms.

Step-by-step explanation:

A difference of two square means the both numbers in the given equation has to be the square numbers.

Hence , the difference of two squares with more then two terms will never be there.

Now, if the example is taken as the expression , Here we can take the square of both the term easily and separately.

Hence, the correct options are:

(A)Both coefficient are perfect squares.

(B)There are only two terms.

For more information visit:

link

answer: 177/8

step-by-step explanation: