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【【x-15】=169,【y-1】的立方=-0.125,求根号x-根号2x*2y-2y-x的立方根】
题目内容:
【x-15】=169,【y-1】的立方=-0.125,求根号x-根号2x*2y-2y-x的立方根优质解答
【x-15】的平方=169,【y-1】的立方=-0.125,
x-15=±13 x=28或2
y-1=-0.5 y=0.5
根号x-根号2x*2y-2y-x的立方根
=根号28-根号2*28*2*0.5-(2*0.5-28)的立方根
=2根号7-2根号14+1
或
根号x-根号2x*2y-2y-x的立方根
=根号2-根号2*2*2*0.5-(2*0.5-2)的立方根
=根号2-2+1
=根号2-1
优质解答
x-15=±13 x=28或2
y-1=-0.5 y=0.5
根号x-根号2x*2y-2y-x的立方根
=根号28-根号2*28*2*0.5-(2*0.5-28)的立方根
=2根号7-2根号14+1
或
根号x-根号2x*2y-2y-x的立方根
=根号2-根号2*2*2*0.5-(2*0.5-2)的立方根
=根号2-2+1
=根号2-1
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