(3a-2b-c)^2-(3a+2b-c)^2化简
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(3a-2b-c)^2-(3a+2b-c)^2化简(3a-2b-c)^2-(3a+2b-c)^2化简(3a-2b-c)^2-(3a+2b-c)^2化简(3a-2b-c)^2-(3a+2b-c)^2=[
(3a-2b-c)^2-(3a+2b-c)^2化简
(3a-2b-c)^2-(3a+2b-c)^2化简
(3a-2b-c)^2-(3a+2b-c)^2化简
(3a-2b-c)^2-(3a+2b-c)^2
=[(3a-2b-c)+(3a+2b-c)][(3a-2b-c)-(3a+2b-c)]
=(3a-2b-c+3a+2b-c)(3a-2b-c-3a-2b+c)
=(6a-2c)(-4b)
=-24ab+8bc
-8(3a-c)b
(3a-2b-c)^2-(3a+2b-c)^2
=(3a-2b-c+3a+2b-c)(3a-2b-c-3a-2b+c)
=(6a-2c)(-4b)
=-8c(3a-c)
原式=(3a-2b-c+3a+2b-c)(3a-2b-c-3a-2b+c)
=(6a-2c)(-4b)=-24ab+8bc
(3a-2b-c)^2-(3a+2b-c)^2
=[(3a-2b-c)-(3a+2b-c)][(3a-2b-c)+(3a+2b-c)]
=-4b(6a-2c)
=-8b(3a-c)
(c-6a)(4b-c)
(a-b+c/a+b-c)-(a-2b+3c/b-c+a)+(b-2c/c-a-b)
(a-b)(b-c)(c-a)/(b-a)(a-c)2(c-b)3
2a(a+b-c)-3b(a+b-c)+5c(c-a-b)
2a(b-c)+3(c-b)
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