(x-4)제곱=(5-2X)제곱

(x-4)제곱=(5-2X)제곱

직접 처방
x-4=±(5-2x)
x-4=5-2x.x=3
x-4=-(5-2x)=2x-5,x=1
그래서 x=3,x=1
분산
(x-4)²-(5-2x)²=0
(x-4+5-2x)(x-4-5+2x)=0
(1-x)(3x-9)=0
x=1,x=3