Question

phân tích đa thức thành nhân tử 

a) x²-x

b) 3x-3y

c) 3xy²+6xyz

d) 5x-20y

g) 5x(x-1)-(1-x)

Answer 1

a) x²-x=x(x-1)

b) 3x-3y = 3(x-y)

c)3xy²+6xyz=3xy(y+2z)

d) 5x-20y=5(x-4y)

g) 5x(x-1)-(1-x)=5x(x-1)+(x-1)=(5x+1)(x-1)

Answer 2

a, \(x^2-x=x\left(x-1\right)\)

b, \(3x-3y=3\left(x-y\right)\)

c, \(3xy^2+6xyz=3xy\left(y+2z\right)\)

d, \(5x-20y=5\left(x-4y\right)\)

g, \(5x\left(x-1\right)-\left(1-x\right)=\left(5x+1\right)\left(x-1\right)\)

Answer 3

a,\(x^2-x=x\left(x-1\right)\)

b,\(3x-3y=3\left(x-y\right)\)

c,\(3xy^2+6xyz=3xy\left(y+2z\right)\)

d,\(5x-20y=5\left(x-4y\right)\)

g,\(5x\left(x-1\right)-\left(1-x\right)=5x\left(x-1\right)+\left(x-1\right)=\left(x-1\right)\left(5x+1\right)\)