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帮个忙哈 给解个方程x (y+32)=126 y+(x-1) 11 =32
人气:261 ℃ 时间:2020-01-19 03:56:47
解答
x (y+32)=126 ①
y+(x-1) 11 =32 ,则y=32-11(x-1)=43-11x②
②代入①,得x(43-11x+32)=126
则11x²-75x+126=0
则(11x-42)(x-3)=0
则x=42/11或x=3
x=42/11代入②,解得y=1
x=3代入②,解得y=10
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