2(x-3)²-2(x-3)(x+3)-12(x+3)=2(x²-6x+9)-2(x-3)(x+3)-12(x+3)=2(x*x-6x+9-x*x-9x-9-6x-18)=2(-3x+9-6x-18)=2(-9x-9)=2*(-9)*(x-1)=-18*(x-1)입니다.
[무물보AI] 답변 로딩중...