(3a+b)(3a-b) (-1/2a-b) (3y+2x)^2 (3ab+2b)^2 -8a^4b^/6ab^2 (3x^2y-xy^2+1/2xy)/(-1/2xy) 对了追40(3a+b)(3a-b) 空 (-1/2a-b) (1/2a-b)空 (3y+2x)^2空 (3ab+2b)^2空 -8a^4b^/6ab^2空(3x^2y-xy^2+1/2xy)/(-1/2xy)上面错了 急求对了追40
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(3a+b)(3a-b) (-1/2a-b) (3y+2x)^2 (3ab+2b)^2 -8a^4b^/6ab^2 (3x^2y-xy^2+1/2xy)/(-1/2xy) 对了追40(3a+b)(3a-b) 空 (-1/2a-b) (1/2a-b)空 (3y+2x)^2空 (3ab+2b)^2空 -8a^4b^/6ab^2空(3x^2y-xy^2+1/2xy)/(-1/2xy)上面错了 急求对了追40
(3a+b)(3a-b) (-1/2a-b) (3y+2x)^2 (3ab+2b)^2 -8a^4b^/6ab^2 (3x^2y-xy^2+1/2xy)/(-1/2xy) 对了追40
(3a+b)(3a-b) 空 (-1/2a-b) (1/2a-b)空 (3y+2x)^2空 (3ab+2b)^2空 -8a^4b^/6ab^2空(3x^2y-xy^2+1/2xy)/(-1/2xy)上面错了 急求对了追40
(3a+b)(3a-b) (-1/2a-b) (3y+2x)^2 (3ab+2b)^2 -8a^4b^/6ab^2 (3x^2y-xy^2+1/2xy)/(-1/2xy) 对了追40(3a+b)(3a-b) 空 (-1/2a-b) (1/2a-b)空 (3y+2x)^2空 (3ab+2b)^2空 -8a^4b^/6ab^2空(3x^2y-xy^2+1/2xy)/(-1/2xy)上面错了 急求对了追40
9a^2-b^2
b^2-a^2/4
9y^2+6xy+4x^2
9a^2b^2+12ab^2+4b^2
-4a^3/3b
-6x+2y-1