Which of the following is the expansion of (2x – y) 2?

4x² - 4xy + y²

Step-by-step explanation:

For clarity it is essential that you use (2x - y)^2 or (2x – y)² to indicate the square of (2x - y).

Since we're squaring (2x - y), we expect 3 terms in the expansion.

(2x - y)(2x - y) = 4x^2 - 4xy + y^2, or 4x² - 4xy + y²

Next time you see "the following," please share the answer choices.  Thank you.

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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