已知x,y为有理数,满足根号2x+3(y-2根号2)=6+3根号2,求x+y的值
人气:477 ℃ 时间:2019-09-30 20:38:36
解答
√2x+3(y-2√2)=6+3√2
√2x+3y-6√2=6+3√2
∴√2x+3y=6+9√2
∵x,y为有理数
∴3y=6,√2x=9√2
∴x=9,y=2
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