Question

求下列式子中的X的值-8(X-3)的立方=27(2x-1)的立方=8340+512x的立方=-3

Answer 1

1、-8（x-3)^3=27 => (x-3)^3=-27/8 => x-3=-3/2

x=3/2

2、(2x-1)^3=8 => 2x-1=2 => x=1/2

3、340+512x^3=-3 => 512x^3=-343 => x^3=-343/512

x=-7/8