Question

Phân tích đa thức thành nhân tử:

6x² – 7x -20

Answer 1

\(6x^2-7x-20\)

\(=6x^2+8x-15x-20\)

\(=2x\cdot\left(3x+4\right)-5\left(3x+4\right)\)

\(=\left(3x+4\right)\left(2x-5\right)\)

Answer 2

\(6x^2-7x+1=6x^2-6x+1\)

\(\left(x-1\right)-\left(x-1\right)=\left(6x-1\right)\left(x-1\right)\)

Answer 3

6x²  - 7x - 20

= 6x² - 15 + 8x - 20

= 3x ( 2x - 5 )+ 4 ( 2x - 5 )

= (3x+4) (2x-5)

Answer 4

phân tích đa thức thành nhân tử: 4x² + 6xy + y²

Answer 5

\(6x^2-7x-20\)

\(=6z^2+8x-15x-20\)

\(=2x\left(3x+4\right)-5\left(3x+4\right)\)

\(=\left(3x+4\right)\left(2x-5\right)\)