作业帮4[a²-1-(3a-2/2)]-15[(2a²-5)/3-(a-3)/5
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/02 07:12:00
![4[a²-1-(3a-2/2)]-15[(2a²-5)/3-(a-3)/5](/uploads/image/z/15221581-61-1.jpg?t=4%5Ba%26%23178%3B-1-%283a-2%2F2%29%5D-15%5B%282a%26%23178%3B-5%29%2F3-%28a-3%29%2F5)
4[a²-1-(3a-2/2)]-15[(2a²-5)/3-(a-3)/5
4[a²-1-(3a-2/2)]-15[(2a²-5)/3-(a-3)/5
4[a²-1-(3a-2/2)]-15[(2a²-5)/3-(a-3)/5
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4[a²-1-(3a-2/2)]-15[(2a²-5)/3-(a-3)/5
=4a²-4-4(3a-2/2)-5(2a²-5)-3(a-3)
=4a²-4-2(3a-2)-(10a²-25)-(3a-9)
=4a²-4-6a+4-10a²+25-3a+9
=-6a²-9a+34