Question

[Nghuyễn Đình vIỆT hƯNG]

phan tich da thuc thanh nhan tu

a,   x^2.y-x^3-9y+9x

b,  x^2(x-1)+16(1-x)

Answer 1

[Không Tên]

\(x^2\left(x-1\right)+16\left(1-x\right)\)

\(=x^2\left(x-1\right)-16\left(x-1\right)\)

\(=\left(x-1\right)\left(x^2-16\right)\)

\(=\left(x-1\right)\left(x-4\right)\left(x+4\right)\)