Question

a)   xy+xz-5x-5y

b)   x+y-x^2-xy

c)    x^2-xy-7x+7y

d)   ax^2+cx^2-ay+ay^2-cy+cy^2

 

d)

 

 

Answer 1

\(b,=\left(x+y\right)-x\left(x+y\right)=\left(1-x\right)\left(x+y\right)\\ c,=x\left(x-y\right)-7\left(x-y\right)=\left(x-7\right)\left(x-y\right)\\ d,=x^2\left(a+c\right)-y\left(a+c\right)+y^2\left(a+c\right)\\ =\left(x^2-y+y^2\right)\left(a+c\right)\)

Câu a sai đề, không phân tích được

Answer 2

a: \(xy+xz-5x-5y=\left(x+y\right)\left(z-5\right)\)

b: \(x+y-x^2-xy=\left(x+y\right)\left(1-x\right)\)

c: \(x^2-xy-7x+7y=\left(x-y\right)\left(x-7\right)\)