Question

(3x - 2)^2 - (3x - 1)^2

 

Answer 1

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

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

\(=-\left(6x-3\right)\)

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

Answer 2

rút gọn biểu thức nhé

Answer 3

\(\left(3x-2\right)^2-\left(3x-1\right)^2\\ =9x^2-12x+4-\left(9x^2-6x+1\right)\\ =9x^2-12x+4-9x^2+6x-1\\ =-6x+3\)