(1/3a^3-5a^4b+1/2a^5)÷(-2/3a^3)

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(1/3a^3-5a^4b+1/2a^5)÷(-2/3a^3)(1/3a^3-5a^4b+1/2a^5)÷(-2/3a^3)(1/3a^3-5a^4b+1/2a^5)÷(-2/3a^3)(1/3a^3

(1/3a^3-5a^4b+1/2a^5)÷(-2/3a^3)
(1/3a^3-5a^4b+1/2a^5)÷(-2/3a^3)

(1/3a^3-5a^4b+1/2a^5)÷(-2/3a^3)
(1/3a^3-5a^4b+1/2a^5)÷(-2/3a^3)
=(1/3a^3)÷(-2/3a^3)-5a^4b÷(-2/3a^3)+1/2a^5)÷(-2/3a^3)
=-1/2+15/2ab-3/4a^2

化简多项式a-2a+3a-4a+5a-...+99a-100a用下面方法解决 a-(a+b)+(a+2b)-(a+3b)+...-(a+101b)解法1:a-2a+3a-4a+5a-..+99a-100a =(a+3a+5a+..+99a)+(-2a-4a-6a-...-100a)=2500a-2550a=-50a解法2:a-2a+3a-4a+5a-...+99a-100a=(a-2a)+(3a-4a)+(5a-6a)+.. 等式:(a+b)^0=1 (a+b)^1=a+b (a+b)^2(a+b)^0=1(a+b)^1=a+b(a+b)^2=a^2+2ab+b^2(a+b)^3=a^3+3a^2b+3ab^2+b^3问:(a+b)^4=?(a+b)^5=?``````` (a+b)^9=? 比较A=a^6+a^4+a^2+1与B=a^5+a^3+a的大小 5(a*a*b-3*a*a*b)-2*(a*a*b-7*a*b*b) 3a^2-5a(3b-a)+2a(-4a-5/2b),其中a=1/5, 2(a+b)-[4(a+b)-3(a+b)]一[5(a-b)+(a-b)]过程 集合A{a+2,(a+1)^2,a^2+3a+3} B{a+b,1,a-b+5} 若A=B,求a,bSD A={2,4,a²-2a+3},B={a+1,a²-4a+2,a²-3a+4,a²-5a+3}若A∩B={2,3}求A∪B 已知集合A={1,4,a²-2a},B={a-2,a²-4a+2,a²-3a+3,a²-5a},若A∩B={1,3}则A∪B=? 已知A=3A-4B+C,B=5A+4B+2C,求[1]A-B;[2]A+B;[3]2A-3B. a小于0,b大于0,|5-2a|-|5a-b|+|3a-1|-|4b-a| 已知5a+3/(a-2)(a-1)等于A/(a-2) +B/(a-1),A等于 ,B等于 . 判断下列各式是否正确:(1)|-a|=|a|.(2)-|a|=|-a|.(3)a分之|a|=|a|分之a.(4)若|a|=|b|,则a=b.(5)若a=b,则|a|=|b|.(6)若|a|>|b|,则a>b.(7)若a>b,则|a|大于|b|. 因式分解:(a+1)(a+3)(a+5)(a+7)+15 a(a-b+2)-6b(b+1)(a+1)(a+3)(a+5)(a+7)+15a(a-b+2)-6b(b+1) 1.(a-b)(a^2+ab+b^3)2.(a-b)(a^3+a^2b+ab^2+b^3)3.(a-b)(a^4+a^3b+a^2b^2+ab^3+b^4)4.(a-b)(a^10+a^9b+a^8b^2+...+ab^9+b^10)5.(X-1)(x^5+x^4+x^3+x^2+1)6.(a-b)(a^n+a^n-1b+a^n-2b^2+...+ab^n-1+b^n) (a-2b)(a+2b)-(a-5b)(a+3b),当a=-1,b=1 化简求值:(a-2b)(a^2+2ab+4b^2)-a(a-5b)(a+3b),a=-1,b=1 (a-2b)(a^2+2ab+4b^2)-a(a-5b)(a+3b)其中a=-1,b=1(先化简,再求值)