Math, asked by suresh9431977, 10 months ago

1. Expand (3x – 7y - z)2

Answers

Answered by lekharbalaji4446

3

Step-by-step explanation:

(3x)²-(7y)²-(z)²-2(3x)(7y)-2(7y)(z)-2(z)(3x)

9x²-49y²-z²-42xy-14yz-6xz

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