Question

Làm nhah hộ mình

Answer 1

\(a,x^3+2x^2+x\)

\(=x^3+x^2+x^2+x\)

\(=\left(x^3+x^2\right)+\left(x^2+x\right)\)

\(=x^2\left(x+1\right)+x\left(x+1\right)\)

\(=\left(x+1\right)\left(x^2+x\right)\)

\(=x\left(x+1\right)\left(x+1\right)\)

\(=x\left(x+1\right)^2\)

\(b,xy+y^2-y-x\)

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

\(=y\left(x+y\right)-\left(x+y\right)\)

\(=\left(x+y\right)\left(y-1\right)\)

Answer 2

a, x^3+2x^2+x

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

=x(x+1)^2

b, xy+y^2-y-x

=x(y-1)+y(y-1)

=(y-1)(x+y)

Answer 3

x³+2x²+x

=x(x²+2x+1)

=x(x+1)²

=xy+y²-x-y

=(xy+y²)-(x+y)

=y(x+y)-(x+y)

=(x+y)(y-1)