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gbrndtnyt
1 tháng trước

giải bất phương trình x−1x−3>1

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2 câu trả lời

Wiz12112007
1 tháng trước

Đáp án + Giải thích các bước giải:

x-1x-3>1

⇔x-1x-3-1>0

⇔x-1x-3-x-3x-3>0

⇔x-1-x+3x-3>0 

⇔2x-3>0 

⇔x-3>0                      (Vì 2 > 0)

⇔x>3 

Vậy bất phương trình có nghiệm là x>3 

Hương Ngoc Lan
1 tháng trước

Đáp án:

 

Giải thích các bước giải:

(x−1)/(x−3)>1

(x−1)/(x−3)>(x−3)/(x−3)

x-1>x−3

x-x>-2

0x>-2(vô lí)

vậy bpt vô nghiệm'

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1 đáp án
4 giờ trước

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