(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)