填空(1)(-2m²n³)³= (2)(-1/5ab)(-10a+5b)= (3)2x(x²-1/2x+4)= (4)(x+1)(x+3)
问题描述:
填空(1)(-2m²n³)³= (2)(-1/5ab)(-10a+5b)= (3)2x(x²-1/2x+4)= (4)(x+1)(x+3)
计算:(1)(2a-1)(a-4)-(a+3)(a-1) (2)t²-(t+1)(t-5) 分解因式:a的4次方-a的3次方+a的2次方-a
答
(1)(-2m²n³)³= -8m^6n^9;(2)(-1/5ab)(-10a+5b)=2a²b-ab²;(3)2x(x²-1/2x+4)=2x³-1+8x;(4)(x+1)(x+3)=x²+4x+3;计算:(1)(2a-1)(a-4)-(a+3)(a-1) =2a²-8a-a+4...