(X-2)^2-10(X-2)+25=0 (X-2)^2-10(X-2)+25=0_数学解答

(X-2)^2-10(X-2)+25=0 (X-2)^2-10(X-2)+25=0

人气：380 ℃　时间：2020-04-01 07:11:19

解答

(X-2)^2-10(X-2)+25=0
X^2-4X+4-10X+20+25=0
X^2-14X+24+25=0
X^2-14+49=0
(X-7)^2=0
x=7