Question

phân tích thành nhân tử:

a) 6x²-11x+3

b) 2x²+3x-27

c) 2x²-5xy-3y²

Answer 1

a) 6x² - 11x + 3 = 6x² - 2x - 9x + 3 = 2x(3x - 1) - 3(3x - 1) = (3x - 1)(2x - 3)

b) 2x² + 3x - 27 = 2x² - 6x + 9x - 27 = 2x(x - 3) + 9(x - 3) = (x - 3)(2x + 9)

c) 2x² - 5xy - 3y² = 2x² + xy - 6xy - 3y² = x(2x + y) - 3y(2x + y) = (2x + y)(x - 3y)

Answer 2

6x²-11x+3

<=> 6x² - 2x -9x +3

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

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

Answer 3

what ???