write the expansion:
(9x-2y-3z)²
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Answered by
10
Answer:
(9x-2y-3z)²
= 9x²+2y²+3z²+2(-18xy+6yz-27xz)
= 81x²+4y²+9z²-36xy+12yz-54xz
Answered by
0
Answer:
81x²+4y²+9z²-36xy+12yz-54zx
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