(2xleft( {x - 3} right) + left( {x - 2} right)left( {5 - 2x} right))
Giải chi tiết:
(begin{array}{l}2xleft( {x - 3} right) + left( {x - 2} right)left( {5 - 2x} right)\ = left( {2{x^2} - 6x} right) + left( {5x - x.2x - 2.5 + 4x} right)\ = left( {2{x^2} - 6x} right) + left( {5x - 2{x^2} - 10 + 4x} right)\ = 2{x^2} - 6x + 5x - 2{x^2} - 10 + 4x\ = 3x - 10end{array})
Chọn C.