计算. (1)(-2x4)4+2x10(-2x2)3+2x4•5(x4)3. (2)(x-y-5)(x+y-5).
问题描述:
计算.
(1)(-2x4)4+2x10(-2x2)3+2x4•5(x4)3.
(2)(x-y-5)(x+y-5).
答
(1)原式=16x16-16x16+10x16=10x16;
(2)原式=(x-5)2-y2=x2-10x+25-y2.