Question

Which binomials are a difference of squares? choose exactly two correct answers.

Answer 1

B and C

Explanation:

There are 3 conditions for the difference of squares.

• The power on the variable must be even making A incorrect. x^2 - 16 is and example of what I mean. The 2 is even.
• The sign between 2 terms must be minus, making D incorrect.
• Any coefficient (given your examples) must be perfect squares. 9x^2 - 16. Nine and 16 are both perfect squares.

The correct answer is B and C