Question

A, x2​- 3x +xy-3y

 

B. X​3- 2x² + x

C, x³+ 2x²y + xy² -9x

Answer 1

a) \(x^2-3x+xy-3y=\left(x^2-3x\right)+\left(xy-3y\right)\)

\(=x\left(x-3\right)+y\left(x-3\right)=\left(x+y\right)\left(x-3\right)\)

b) \(x^3-2x^2+x=x\left(x^2-2x+1\right)=x\left(x-1\right)^2\)

c)\(x^3+2x^2y+xy^2-9x=x\left(x^2+2xy+y^2-9\right)\)

\(=x\left[\left(x+y\right)^2-3^2\right]=x\left(x+y-3\right)\left(x+y+3\right)\)

Answer 2

Câu a là x mũ 2. Còn câu b là x mũ 3 nha m.n

Answer 3

cho mik nha