Question

Phân tích đa thức thành nhân tử

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

2, xz+yz-5x-5y

3, 3x\(^2\)-3xy-5x+5y

4, x\(^2\)-2xy+y\(^2\)-xz+yz

5, 3x\(^2\)+6xy+3y\(^2\)-3z\(^2\)

6, 45+x\(^{^{ }3}\)-5x\(^2\)-9x

7, x\(^2\)-6x+5

8,x\(^2\)+7x+12

9, 2x\(^2\)-7x+3

10, 3x\(^2\)-12y\(^2\)

11, 5xy\(^2\)-10xyz+5xz\(^2\)

12,x\(^2\)-y\(^2\)-x+y

13, a\(^3\)x-ab+b-x

14, (1+x\(^2\))-4x(1-x\(^2\))

CÁC CẬU GIẢI CHI TIẾT GIÚP MÌNH VỚI Ạ

Answer 1

13: =x(a^3-1)-b(a-1)

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

=(a-1)(a^2x+a*x+x-b)

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

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

10: =3(x^2-4y^2)

=3(x-2y)*(x+2y)

7: =x^2-x-5x+5=(x-1)(x-5)

8: =x^2+3x+4x+12=(x+3)(x+4)

9: =2x^2-6x-x+3=(x-3)(2x-1)