А) m(n+k)+2n+2k=m(n+k)+2(n+k)=(m+2)(n+k)
б) 3a-3b+(a-b)=3(a-b)+(a-b)=(3+1)(a-b)=4(a-b)
в) 4(p+q)+mp+mq=4(p+q)+m(p+q)=(4+m)(p+q)
г) xy-y^2+7(x-y)=y(x-y)+7(x-y)=(y+7)(x-y)
а) x(y+z)+3z+3y=x(y+z)+3(z+y)=(x+3)(y+z)
б) m(n-k)-5n+5k=m(n-k)-5(n-k)=(m-5)(n-k)
в) ab+2b-4a-8b=b(a+2)-4(a+2b)=(b-4)(a+2)(a+2b)
г) kp^2-k^2p+p-k=kp(p-k)+(p-k)=(kp+1)(p-k)