简便计算229又1/11除以46又1/44

简便计算229又1/11除以46又1/44
简便计算229又1/11除以46又1/44

简便计算229又1/11除以46又1/44
=2520/11÷2025/44
=10080/2025
=224/45

=a^2/(a-1)-(a+1)
=[a^2-(a+1)(a-1)]/(a-1)
=(a^2-a^2+1)/(a-1)
=1/(a-1)
x^2-2x+3=y
乘4
4x^2-8x+12=4y
加5
4x^2-8x+17=4y+5
所以y^2=4y+5