Question

(√x＋3√y) ^2 -6√xy упростите выражение​

Answer 1

$(sqrt{x}+3sqrt{y})^2-6sqrt{xy}=(sqrt{x})^2+2cdot3sqrt{xy}+(3sqrt{y})^2-6sqrt{xy}=\\=|x|+6sqrt{xy}+9|y|-6sqrt{xy}=boxed{|x|+9|y|}$

Answer 2

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