Đáp án:
Giải thích các bước giải:
i)= (2x)^2+2.2x.3+3^2=(2x+3)^2
l)= (xy+3y)+(xz+3z)=y.(x+3)+z.(x+3)=(x+3).(y+z)
n)= (11x+11y)-(x^2+xy)=11.(x+y)-x.(x+y)=(x+y).(11-x)
h)= 6^2-2.6.x+x^2=(6-x)^2
m)= (xy+y)+(-xz-z)=y.(x+1)-z(x+1)=(x+1).(y-z)
p)= (x^2-xy)+(-8x+8y)=x.(x-y)+8.(x-y)=(x-y).(x+8)
