(a-2b)(a²+2ab+4b²)-a(a+3b)(a-3b)其中a=负九分之一,b=1求a,b
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(a-2b)(a²+2ab+4b²)-a(a+3b)(a-3b)其中a=负九分之一,b=1求a,b
(a-2b)(a²+2ab+4b²)-a(a+3b)(a-3b)其中a=负九分之一,b=1
求a,b
(a-2b)(a²+2ab+4b²)-a(a+3b)(a-3b)其中a=负九分之一,b=1求a,b
结果为-7…………