Question

phân tích các đa thức sau thành nhân tử

1, 15x + 15y

2, 8x -  12y

3, xy-x

4, x mũ 2 + x

5, 3x mũ 2 y - 8xy mũ 2

6, 6x - 12xy - 18x mũ 2

Answer 1

Trả lời:

1, 15x + 15y = 15 ( x + y )

2, 8x - 12y = 4 ( 2x - 3y )

3, xy - x = x ( y - 1 )

4, x² + x = x ( x + 1 )

5, 3x²y - 8xy² = xy ( 3x - 8y )

6, 6x - 12xy - 18x² = 6x ( 1 - 2y - 3x )

Answer 2

1) 15x + 15y = 15(x + y)

2) 8x - 12y = 4(2x - 3y)

3) xy - x = x(y - 1)

4) x² + x = x(x + 1) 

5) 3x²y - 8xy² = xy(3x - 8y)

6) 6x - 12xy - 18x² = 6x(1 - 2y - 3x) 

Answer 3

1.\(15x+15y=15\left(x+y\right)\)

2.\(8x-12y=4\left(2x-3y\right)\)

3.\(xy-x=x\left(y-1\right)\)

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

5.\(3x^{2y}-8xy^2\)hay là \(\left(3x\right)^{2y}-\left(8xy\right)^2\)??

6.\(6x-12xy-18x^2=6x\left(1-2y-3x\right)\)

Answer 4

\(15x+15y=15\left(x+y\right)\)

\(8x-12y=4\left(2x-3y\right)\)

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

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

\(3x^2y-8xy^2=xy\left(3x-8y\right)\)

\(6x-12xy-18x^2=6x\left(1-2y-3x\right)\)

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