Question

phân tích đa thức thành nhân tử 

a)-x\(^3\)y+x\(^{^{ }2}\)y\(^2\)

b)-x\(^3\)y\(^2\)-xy\(^2\)z

c)x\(^2\)y\(^3\)-xy\(^2\)

d)-x\(^3\)z-z

e)x\(^2\)-xy+x-y

m)x\(^2\)+2xy-4x+8y

n)x\(^3\)-x\(^2\)-x+1

p)x\(^2\)+2x-y\(^2\)+1

giusp tớ vs

\(^2\)

 

Answer 1

a: \(=-x^2y\cdot x+x^2y\cdot y=x^2y\left(-x+y\right)\)

b: \(=-xy^2\cdot x^2-xy^2\cdot z=-xy^2\left(x^2+z\right)\)

c: x^2y^3-xy^2

=xy^2*xy-xy^2

=xy^2(xy-1)

d: -x^3z-z

=z(-x^3-1)

=-z(x+1)(x^2-x+1)

e: =x(x-y)+(x-y)

=(x-y)(x+1)

n: =x^2(x-1)-(x-1)

=(x-1)(x^2-1)

=(x-1)^2(x+1)