[질문] 개념플러스유형 9가 52쪽에서~53까지 답 알려주세요

5,1,(1)m(x+y-z),(2)(a+b)(x-y),4,(1)(x-3)^2,(2)(3a-1)^2,(3)4(x-y)^2,(4)3y(x+2)^2 ,5,1,(1)25,(2)1/4b^2,(3)6ab,(4)2/3,2,4,(1)3,(2)2a,3