[질문] 개념유형 유형편 기초탄탄라이트3-1답지60쪽부터65쪽까지

6, 8, 4, 4⑴ (x+1)(x+4) ⑵ (x-2)(x+4)⑶(x+2)(x-3) ⑷ (y+2)(y-6)⑸ (x+2y)(x-7y) ⑹ (x+3y)(x-5y)⑺ (x-4y)(x-7y) ⑻ a(x-2)(x+9) / -7,5,2x-5,2x,-5,-5x,-7x