Question

9(x一2)的平方=25 27（x+1）的立方=64这两题怎么算？过程！！！！！！

Answer 1

9(x-2)²=25
==> (x-2)²=25/9
==> x-2=±5/3
==> x=2±(5/3)
==> x1=11/3，x2=1/3

27(x+1)³=64
==> (x+1)³=64/27
==> x+1=4/3
==> x=1/3

Answer 2

9(x-2)²=25→[3(x-2)]²=5²→3(x-2)=±5→x1=11/3,x2=1/3
27(x+1)³=64→[3(x+1)]³=4³→3(x+1)=4→x=1/3