Math, asked by parnikadesale, 2 months ago

pls give me the write ans

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Answered by Anonymous

4

Answer:

$Q17) \: (i) \: - 2xy \\ Q18) \: 8x {}^{2} y \\ Q19) \: (i) \: 1 \\ (ii) \: 1 \\ Q20) \: 3 \times 10 {}^{4}$

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