(8a^2-3ab-5b^2)-(2a^2-2ab+3b^2)

a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快 (a-b)^3+2ab(a-b) 化简：1.3a+2b-5a-b 2.3(-ab+2a)-2(3a-ab) 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) 已知a*a-ab=3,ab+b*b=-5,求代数式a*a+b*b与a*a-2ab-b*b的值 1/4a^2b^2{3ab(a+b)-5a(ab-b^2)}=? (8a^2-3ab-5b^2)-(2a^2-2ab+3b^2) -ab(a^2b^5-ab^3-b) (a-b)(a^5+a^4b+a^3b^2+ab^4+b^5)bggg 5ab^2-7a^2b-8ab^2-3a^b合并同类项 (2a-5b+3ab)+(3a-b)-(8a-9b+ab),其中a-b=4,ab=3 先化简,再求值.(2a-5b+3ab)+(3a-b)-(8a-9b+ab),其中a-b=4,ab=3. 当a+b=8,ab=5,则a^3b-2a^2b^2+ab^3 6a-5b+2ab+5b-3a 5ab^2-{2a^b-[3ab^2-(4ab^2-2a^2b)]} a+b/2ab 2AB/A+B a+b/2ab