1.4x(y-x)-y②2.3x②-1/33.(x②+y②)②-4x②y②4.2x②+2x+1/25.2a(x②+1)②-2ax②6.(a-b)(3a+b)②+(a+3b)②(b-a)7.x②+y②-1-2xy8.a②-b②-4a=4b我最不擅长分式因解回答完的我会加分.怕没人接.还有.最好有过程.3q【注
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/27 02:43:18
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