代数式求值 x÷3y=y÷2x-5y=6x-15y÷x 求4x²-5xy+6y²÷x²-2xy+3y²x÷3y=y÷2x-5y=6x-15y÷x 求4x²-5xy+6y²÷x²-2xy+3y²
问题描述:
代数式求值 x÷3y=y÷2x-5y=6x-15y÷x 求4x²-5xy+6y²÷x²-2xy+3y²
x÷3y=y÷2x-5y=6x-15y÷x
求4x²-5xy+6y²÷x²-2xy+3y²
答
ni da gong shi,bu yao dong,
jiu zhan zai na!
qian wan bu yao shuo hua a!
ni zhi neng reng xue qiu zhi lei.
bian ren de ni shi yi xia ba!
hao you dou ke yi dong,bai bao xiang jiu shi peng peng yun qi lo!
huo zhe quan bu xing jiu cong shang.
答
x/3y=y/2x-5y2x^2-5xy-3y^2=0(x-3y)(2x+y)=0①x/3y=6x-15y/xx^2-18xy+45y^2=0(x-3y)(x-15y)=0②y/2x-5y=6x-15y/xxy=3(2x-5y)^2(x-3y)(12x-25)=0③若①②③同时成立,x-3y=0,x=3y(4x^2-5xy+6y^2)/(x^2-2xy+3y^2)=[4(3y...