Question

помогите прошу Вас помогите

Answer 1

x-18=(√x+√18)(√x-√18)=(√x+3√2)(√x-3√2)

(√x+3√2)/(x-18)=(√x+3√2)/(√x+3√2)(√x-3√2)=1/(√x-3√2)

Answer 2

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