Question

the question is expand the following please tell the solution and the identities you use please
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Answer 1

Answer:

(x - y)² - (x + y)² = -4xy

Step-by-step explanation:

We know that,

(x + y)² = x² + 2xy + y²

(x - y)² = x² - 2xy + y²

Now, we are asked

(x - y)² - (x + y)²

= (x² - 2xy + y²) - (x² + 2xy + y²)

Opening brackets we get,

x² - 2xy + y² - x² - 2xy - y²

= -4xy

Thus,

(x - y)² - (x + y)² = -4xy

Hope it helped and you understood it........All the best

Answer 2

Answer:

uppar wale bhai ne sahi answers diya hai