12a^4-3a[a²-4a(a³-2a+3a)]= 3(x^2-2)-5x(x+1)+4x(1-x)=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 07:47:28
![12a^4-3a[a²-4a(a³-2a+3a)]= 3(x^2-2)-5x(x+1)+4x(1-x)=?](/uploads/image/z/585854-62-4.jpg?t=12a%5E4-3a%5Ba%26%23178%3B-4a%28a%26%23179%3B-2a%2B3a%29%5D%3D+3%28x%5E2-2%29-5x%28x%2B1%29%2B4x%281-x%29%3D%3F)
12a^4-3a[a²-4a(a³-2a+3a)]= 3(x^2-2)-5x(x+1)+4x(1-x)=?
12a^4-3a[a²-4a(a³-2a+3a)]= 3(x^2-2)-5x(x+1)+4x(1-x)=?
12a^4-3a[a²-4a(a³-2a+3a)]= 3(x^2-2)-5x(x+1)+4x(1-x)=?
12a^4-3a[a²-4a(a²-2a+3)]=12a^4-3a(a²-4a³+8a²-12a)=12a^4-3a³-12a^4-24a³+36a²
=-27a³+36a²
你的题目有没有错
3(x^2-2)-5x(x+1)+4x(1-x)=3x²-6-5x²-5x+4x-4x²=-6x²-x-6
你要求啥?