下列各式计算正确的是( )
PPT素材网
A.(x+2)(x-5)=x2-2x-3 | B.(x+3)(x-)=x2+x-1 |
C.(x-)(x+)=x2-x- | D.(3x+2)(2x-3)=6x2-5x+6 |
A.(x+2)(x-5)=x2-2x-3 | B.(x+3)(x-)=x2+x-1 |
C.(x-)(x+)=x2-x- | D.(3x+2)(2x-3)=6x2-5x+6 |