a/ (2x – 5).(4x^2+25+10x) b/ (x^2-2x+3).(1/2x-5) c/ (x^3-2x^2+x-1).(5-x) d/ (x^4-x^3+x^2+3x):(x^2-2x+3) 10/08/2021 Bởi Adeline a/ (2x – 5).(4x^2+25+10x) b/ (x^2-2x+3).(1/2x-5) c/ (x^3-2x^2+x-1).(5-x) d/ (x^4-x^3+x^2+3x):(x^2-2x+3)
a/= (2x-5)(2x+5)^2=(2x+5)^2
Đáp án:a/= (2x-5)(2x+5)^2=(2x+5)^2