Question

[X-1]^-17[X-1}+30=0怎么算

Answer 1

[X-1]^2-17[X-1}+30=0

原方程可化为：

(x-1-15)(x-1-2)=0

即：(x-16)(x-3)=0

x-16=0;x-3=0

所以：x1=16,x2=3 .