问题 解答题

(-2x-1)2(2x-1)2-16(x+3)2(x-3)2

答案

原式=(2x+1)2(2x-1)2-16(x+3)2(x-3)2

=[(2x+1)(2x-1)]2-16[(x+3)(x-3)]2

=(4x2-1)2-(4x2-36)2

=(4x2-1+4x2-36)(4x2-1-4x2+36)

=35(8x2-37)

=280x2-1295.

问答题
单项选择题