(4a+3b-17)^2+|8 a-b+1|=0,则可列出方程组

计算：(4a-b)^2-[8a*(a-b)-(3a-b)*(3a+b)] (a+2b)(2a+4b)(3a+6b)(4a+8b) （3a+4b)(7a-8b)+(11a+2b)(8a-7a) 2(a+3b)²-8(a+b)(a-b)-(a+3b)(a-b) 2(a+b)-[4(a+b)-3(a+b)]一[5(a-b)+(a-b)]过程 初二分式的加减法2a-b-c/（a-b)(a-c)+ 2b-c-a/(b-c)(b-a)+ 2c-b-a/(c-b)(c-a)3a-6b/a+b- 5a-6b/a-b- 4a-5b/a+b+ 7a-8b/b-a注：有空格的地方是下一个分式 1/(a-b)-1/(a+b)-(2b)/(a^2+b^2)-(4b^3)/(a^4+b^4)+(8b^7)/(b^8-a^8)快 1/a-b-1/a+b-2b/a^2+b^2-4b^3/a^4+b^4+8b^7/b^2-a^2 (3a-6b)/(a+b) - (5a-6b)/(a-b) - (4a-5b)/(a+b) - (7a-8b)/(a-b) 快 (3a-6b/a+b）-(5a-6b/a-b)-(4a-5b/a+b)-(7a-8b/b-a) [2(a-b)^2+4(a-b)^4+8a(a-b)^3]/2(a-b)^2 已知(a-2b)/(a+2b)=4,求代数式3(a-2b)/4(a+2b)+(4a+8b)/(a-2b)的值 （a-2b)/(a+2b)=3,求(a+2b)/(a-2b)+(3a-6b)/(4a+8b)的解, (a+2b)(a-2b)+(a-b)(a+b)-2(a-3b)(a-b) 2a(a-b)+4a(2a+3b) 1/(a-b)-1/(a+b)-2b/(a^2+b^2)-4b^3/a^4+b^4+8b^7/b^8-a^81/(a-b)-1/(a+b)-2b/(a^2+b^2)-4b^3/(a^4+b^4)+8b^7/(b^8-a^8) 3a^2b-{2a^2b+[9a^b-(6a^2b+4a^2)]-(3a^2b-8a^2)}= 5(a*a*b-3*a*a*b)-2*(a*a*b-7*a*b*b)