计算或化简:(1)计算 (?2)2?(12)?1+3?8?(2008)0;(2)(-2x)2+(6x3-12x4)÷(3x2);(3)(3x+2)

2025-04-24 04:45:53
推荐回答(1个)
回答1:

(1)原式=4-2-2-1=-1;
(2)原式=4x2+2x-4x2
=2x;
(3)原式=(9x2-4)(9x2-4)
=(9x2-4)2
=81x4-72x2+16.