Question

Phân tích đa thức sau thành nhân tử: 7x-6x^2-2

Answer 1

7x - 6x² - 2

= - ( 6x² - 7x + 2)

= - ( 6x² - 3x - 4x + 2 )

= - [ 3x ( 2x - 1 ) - 2 ( 2x - 1 ) ]

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

~ Học tốt ~

Answer 2

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

\(=-\left(6x^2-7x+2\right)\)

\(=-\left(6x^2-3x-4x+2\right)\)

\(=\left[3x\left(2x-1\right)-2\left(2x-1\right)\right]\)

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

Answer 3

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

\(=\left(3x-6x^2\right)-\left(2-4x\right)\)

\(=3x\left(1-2x\right)-2\left(1-2x\right)\)

\(=\left(3x-2\right)\left(1-2x\right)\)

Answer 4

Giải :

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

\(=-\left(6x^2-7x+2\right)\)

\(=-\left(6x^2-3x-4x+2\right)\)

\(=-[3x\left(2x-1\right)-2\left(2x-1\right)]\)

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