问题
计算题
计算:(6x4﹣2x2)·(﹣2x2)﹣(2x2﹣1)2
答案
解:(6x4﹣2x2)·(﹣2x2)﹣(2x2﹣1)2
=﹣12x6+4x4﹣(4x4﹣4x2+1)
=﹣12x6+4x4﹣4x4+4x2﹣1
=﹣12x6+4x2﹣1
计算:(6x4﹣2x2)·(﹣2x2)﹣(2x2﹣1)2
解:(6x4﹣2x2)·(﹣2x2)﹣(2x2﹣1)2
=﹣12x6+4x4﹣(4x4﹣4x2+1)
=﹣12x6+4x4﹣4x4+4x2﹣1
=﹣12x6+4x2﹣1