Quy đồng các phân thức sau: x/(10x-10); (9x-11)/(30x^2-30); 1/(3x+3)
Giải thích
MTC:30.(x−1).(x+1)x10x−10=x10.(x−1)=3x.(x+1)30.(x−1).(x+1)9x−1130x2−30=9x−1130.(x2−1)=9x−1130.(x−1).(x+1)13x+3=13.(x+1)=10.(x−1)30.(x−1).(x+1)
MTC:30.(x−1).(x+1)x10x−10=x10.(x−1)=3x.(x+1)30.(x−1).(x+1)9x−1130x2−30=9x−1130.(x2−1)=9x−1130.(x−1).(x+1)13x+3=13.(x+1)=10.(x−1)30.(x−1).(x+1)