Câu hỏi của Khải Tâm Trần Đặng

Question

(3x + 9 ).(4 - 2x)=0

Chuu · Accepted Answer

`(3x+9).(4-2x)=0``@Th1:``3x+9=0``3x=0-9``3x=-9``x=-9:3``x=-3``@Th2:``4-2x=0``2x=4-0``2x=4``x=4/2``x=2`Câu trả lời: `(3x+9).(4-2x)=0``@Th1:``3x+9=0``3x=0-9``3x=-9``x=-9:3``x=-3``@Th2:``4-2x=0``2x=4-0``2x=4``x=4/2``x=2`

minh · Answer

(3x+9).(4−2x)=0(3x+9).(4-2x)=0∘Th1:∘Th1:3x+9=03x+9=03x=0−93x=0-93x=−93x=-9x=−9:3x=-9:3x=−3x=-3∘Th2:∘Th2:4−2x=04-2x=02x=4−02x=4-02x=42x=4x=42x=42x=2Câu trả lời: (3x+9).(4−2x)=0(3x+9).(4-2x)=0∘Th1:∘Th1:3x+9=03x+9=03x=0−93x=0-93x=−93x=-9x=−9:3x=-9:3x=−3x=-3∘Th2:∘Th2:4−2x=04-2x=02x=4−02x=4-02x=42x=4x=42x=42x=2

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