来自姜仁富的问题
-(x²-2x)+(-3x+2x²)(2)-2(a²-3ab)-3(ab-2a²)
-(x²-2x)+(-3x+2x²)(2)-2(a²-3ab)-3(ab-2a²)
1回答
2020-03-02 23:45
-(x²-2x)+(-3x+2x²)(2)-2(a²-3ab)-3(ab-2a²)
-(x²-2x)+(-3x+2x²)(2)-2(a²-3ab)-3(ab-2a²)
-x²+2x-3x+2x²=x²-x=x(x-1)
-2a²+6ab-3ab+6a²=4a²+3ab