Beginning of The End has left a new comment on your post "NHỮNG HẰNG ĐẲNG THỨC ĐÁNG NHỚ":
(ax+b)(x²+cx+1)=x³-3x+2
<=>ax³+(b+ac)x²+(a+bc)x+b= x³-3x+2
Để 2 hàm đồng nhất thì:
* b=2
* a=1
*2+1.c=0 =>c=-2
*1+2c=-3 =>c=-2
Vậy các giá trị a,c,b đều thỏa mãn.
Kết luận: (a,b,c)=(1,2,-2)
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Posted by Beginning of The End to Học Để Thi at Oct 11, 2021, 9:20 AM
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