Đáp án: Cho mình hỏi Làm thế bào để (√x-1/√x+1) = -1 ạ? - (Đáp án + Giải thích các bước giải) (√x-1)/(√x+1)=-1 (x ∈ RR) <=>√x-1=-1(√x+1) <=>√x-1=-√x-1 <=>2√x=0 <=>√x=0 <=>x=0 (tm) Vậy x=0 thì (√x-1)/(√x+1)=-1

(Đáp án + Giải thích các bước giải) (√x-1)/(√x+1)=-1 (x ∈ RR) <=>√x-1=-1(√x+1) <=>√x-1=-√x-1 <=>2√x=0 <=>√x=0 <=>x=0 (tm) Vậy x=0 thì (√x-1)/(√x+1)=-1

Chi Mai Linh

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Cho mình hỏi: Làm thế bào để $\frac{\sqrt[]{x}-1}{\sqrt[]{x}+1}$ = -1 ạ?

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Thegod2k7

5 tháng trước

$\textit{Đáp án + Giải thích các bước giải:}$

`(\sqrt{x}-1)/(\sqrt{x}+1)=-1` `(x \in RR)`

`<=>\sqrt{x}-1=-1(\sqrt{x}+1)`

`<=>\sqrt{x}-1=-\sqrt{x}-1`

`<=>2\sqrt{x}=0`

`<=>\sqrt{x}=0`

`<=>x=0` $(tm)$

Vậy `x=0` thì `(\sqrt{x}-1)/(\sqrt{x}+1)=-1`

helik8

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Đáp án:

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Cho mình hỏi: Làm thế bào để $\frac{\sqrt[]{x}-1}{\sqrt[]{x}+1}$ = -1 ạ?

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Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

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I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.