Question

Phân tích đa thức thành nhân tử:

a) ( x - 1 )x + ( x - 1 )y

b) 5x³ + 15xy

c) 6xy² - 8x²yy

d) 2x³ + 4x² - 6x

e) 5( x - 3 ) - 20( 3 - x ) 

Answer 1

\(a)(x-1)x+(x-1)y\)

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

\(b)5x^3+15xy\)

\(=5x(x^2+3y)\)

\(c)6xy^2-8x^2y\)

\(=2xy(3y-4x)\)

\(d)2x^3+4x^2-6x\)

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

\(e)5(x-3)-20(3-x)\)

\(=5(x-3)+20(x-3)\)

\(=(x-3)(5+20)\)

\(=25(x-3)\)

Answer 2

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

b: =5x(x^2+3y)

c: 6xy^2-8x^2y=2xy(3y-4x)

d: =2x(x^2+2x-3)

=2x(x+3)(x-1)

e: =25(x-3)

Answer 3

  uy tín nha