(1)原隐老式=a(x²+2a+a²)=a(x+a)²(2)原式=3a²(2a - 3)(3)原式=16x²y²z²(1+3x² - 6z²)(4)原式=0,(5)原式=0,(6)原式=2ab(a+b)伍携山(2 - 3a)(7)原式=(x+10)(x-10)(8)原式=(ab+1/3)(ab - 1/3)(9)原式腔中=(2a+3b)(2a - 3b)(10)原式=(5 - 4a²)(5+4a²)(11)原式=(3/10x - 4y²)(3/10x+4y²)