作业帮若|a-2|+(b+3)²=0,求3a²b-[2ab²-2(ab-1.5a²b)+ab]+3ab²的值
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/04 07:11:58
![若|a-2|+(b+3)²=0,求3a²b-[2ab²-2(ab-1.5a²b)+ab]+3ab²的值](/uploads/image/z/445226-50-6.jpg?t=%E8%8B%A5%7Ca-2%7C%2B%28b%2B3%29%26%23178%3B%3D0%2C%E6%B1%823a%26%23178%3Bb-%5B2ab%26%23178%3B-2%28ab-1.5a%26%23178%3Bb%29%2Bab%5D%2B3ab%26%23178%3B%E7%9A%84%E5%80%BC)
若|a-2|+(b+3)²=0,求3a²b-[2ab²-2(ab-1.5a²b)+ab]+3ab²的值
若|a-2|+(b+3)²=0,求3a²b-[2ab²-2(ab-1.5a²b)+ab]+3ab²的值
若|a-2|+(b+3)²=0,求3a²b-[2ab²-2(ab-1.5a²b)+ab]+3ab²的值
|a-2|+(b+3)²=0 两个非负数的和为0,则他们都等于0
a-2=0 b+3=0 解得
a=2 b=-3
3a²b-[2ab²-2(ab-1.5a²b)+ab]+3ab²
=3a²b-(2ab²-2ab+3a²b+ab)+3ab²
=3a²b-(2ab²-ab+3a²b)+3ab²
=3a²b-2ab²+ab-3a²b+3ab²
=ab²+ab
=ab(b+1)
=2×(-3)×(-3+1)
=12