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

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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

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
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

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
(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-(a²+2a-3)
=2a²-9a+4-a²-2a+3
=a²-11a+7;
(2)t²-(t+1)(t-5)
=t²-(t²-4t-5)
=t²-t²+4t+20
=4t+20;
分解因式:a的4次方-a的3次方+a的2次方-a
=a³(a-1)+a(a-1)
=(a³+a)(a-1)
=a(a-1)(a²+1)
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