求下列各式中x的值:25(x-1)²=49;343(x+1)³=27.
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![求下列各式中x的值:25(x-1)²=49;343(x+1)³=27.](/uploads/image/z/603052-52-2.jpg?t=%E6%B1%82%E4%B8%8B%E5%88%97%E5%90%84%E5%BC%8F%E4%B8%ADx%E7%9A%84%E5%80%BC%EF%BC%9A25%EF%BC%88x-1%EF%BC%89%26%23178%3B%3D49%EF%BC%9B343%EF%BC%88x%2B1%EF%BC%89%26%23179%3B%3D27.)
求下列各式中x的值:25(x-1)²=49;343(x+1)³=27.
求下列各式中x的值:25(x-1)²=49;343(x+1)³=27.
求下列各式中x的值:25(x-1)²=49;343(x+1)³=27.
25(x-1)²=49
(x-1)²=49/25
x-1=7/5
x=1+7/5=12/5
343(x+1)³=27
(x+1)³=27/343
x+1=3/7
x=3/7-1=-4/7
( 5(X-1))^2=7^2 5(X-1)=7 X=7/5+1 X=12/5 7^3 (X+1)^3=3^3 (7(X+1))^3=3^3 7(X+1)=3 X=3/7-1 X= -4/7 更容易吧 望采纳\(^o^)/~