Đáp án: x=1/4 hoặc x=-7/4
Giải thích các bước giải:
|x2.|x+34∣∣=x2
⇔x2.|x+34|=x2
⇔|x+34|=1
⇔ [x+34=1x+34=−1
⇔ [x=14x=−74
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