Question

64x³=﹣125，（x-2）³=-1求x的值。

Answer 1

(1)64x³=﹣125，
开立方得4x=-5,
x=-5/4.
(2)（x-2）³=-1,
开立方得x-2=-1,
x=1.

Answer 2

%A1%DFx%26sup2%3B-5x-1999%3D0%0D%0A%A1%E0x%5E2-5x%3D1999%0D%0A%5B%28x-2%29%26sup3%3B-%A3%A8x-1%29%26sup2%3B%2B1%5D%2F%28x-2%29%0D%0A%3D%5B%28x-2%29%26sup3%3B%2B1-%A3%A8x-1%29%26sup2%3B%5D%2F%28x-2%29%0D%0A%3D%7B%28x-2%2B1%29%5B%28x-2%29%5E2-%28x-2%29%2B1%5D-%28x-1%29%5E2%7D%2F%28x-2%29%0D%0A%3D%5B%28x-1%29%28x%5E2-5x%2B7%29-%28x-1%29%5E2%5D%2F%28x-2%29%0D%0A%3D%28x-1%29%28x-2%29%28x-4%29%2F%28x-2%29%0D%0A%3D%28x-1%29%28x-4%29%0D%0A%3Dx%5E2-5x%2B4%0D%0A%3D1999%2B4%0D%0A%3D2003