问题
填空题
计算:2x3-2x[x2-2(x-3)]=______.
答案
2x3-2x[x2-2(x-3)]
=2x3-2x[x2-2x+6]
=2x3-2x3+4x2-12x
=4x2-12x.
故答案为:4x2-12x.
计算:2x3-2x[x2-2(x-3)]=______.
2x3-2x[x2-2(x-3)]
=2x3-2x[x2-2x+6]
=2x3-2x3+4x2-12x
=4x2-12x.
故答案为:4x2-12x.