Question

Please Answer This Questions No unnecessary Answers Please Answer its urgent

Answer 1

Answer:

I think it might be helpful for you thank you.

Step-by-step explanation:

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Answer 2

Answer:

1. (x - 2y - z)².

2. (2x + y - 2)².

3. (3a + 7b + c)².

4. (2x-5y+3z)²

Step-by-step explanation:

1.(x-2y+z)²

= x²-4y²-z²-2(x×2y)-2(2y×z)-2(z×x)

= x²-4y²-z²-4xy-4yz-2zx.