1.如果a、b、c、d卻都是積極的整數(shù),并且aⁿ(5次方)⁴= b,c = d³²,模型= 19,然后d-b =().
2.如果把這三個有理數(shù)(有理數(shù)):b:c = 2:3:5,b²²²c = abc,那么b c =().
3.如果x-5/6 | |(2 y 1)²= 0,然后x²y =().
這是翻譯.
1.設(shè)a=m⁴,b=mⁿ(5次方),c=n²,d=n³
c-a=n²-m⁴=19 ==>> n=10 m=3
==>> b=243 d=1000
d-b=757
2.設(shè)a=2t,b=3t,c=5t
a²+b²+c²=38t²=abc=30t³ t=19/15
a+b+c=10t=38/3
3.|x-5/6|+(2y+1)²=0 ==>> |x-5/6|=0 and 2y+1=0 ==>> x=5/6 y=-1/2
x²+y=25/36-1/2=7/36
夠詳細的了吧?嘿嘿~good恩恩，嘿嘿~