36a^2 - (a^2 +9)^2

dufan_wing2022-10-04 11:39:543条回答

36a^2 - (a^2 +9)^2
分解因式

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zfg79620 共回答了17个问题 | 采纳率100%: 36a^2 - (a^2 +9)^2
=(6a)^2-(a^2+9)^2
=(6a+a^2+9)(6a-a^2-9)
=-(a+3)^2(a-3)^2; 1年前

马元元共回答了21806个问题 | 采纳率: 36a^2 - (a^2 +9)^2
=(6a)^2 - (a^2 +9)^2
=(6a+a^2+9)(6a-a^2-9)
=-(a+3)^2(a^2-6a+9)
=-(a+3)^2(a-3)^2; 1年前

(3x+1)^2(3x-1)^2 (x-2y)(x+2y)-(x+2y)^2 -36a^2+12ab-b^2 (2m-3 (3x+1)^2(3x-1)^2 (x-2y)(x+2y)-(x+2y)^2 -36a^2+12ab-b^2 (2m-3n)^2-2m+3n (x+2y)(x-2y)-(2x-y)(-2x-y) (2a+b)^2-(3a-b)^2+5a(a-b) (3x+1)^2(3x-1)^2 (x-2y)(x+2y)-(x+2y)^2 -36a^2+12ab-b^2 (2m-3n)^2-2m+3n (x+2y)(x-2y)-(2x-y)(-2x-y) (2a+b)^2-(3a-b)^2+5a(a-b)要过程 wenjuan861年前2: nekeyuan 共回答了20个问题 | 采纳率90%

(3x+1)^2(3x-1)^2
=[(3x+1)(3x-1)]^2
=(9x^2-1)^2
=81x^4-18x^2+1
(x-2y)(x+2y)-(x+2y)^2
=(x+2y)(x-2y-x-2y)
=-4y(x+2y)
=-4xy-8y^2
-36a^2+12ab-b^2
=-(36a^2-12ab+b^2)
=-(6a-b)^2
(2m-3n)^2-2m+3n
=(2m-3n)(2m-3n-1)
(x+2y)(x-2y)-(2x-y)(-2x-y)
=x^2-4y^2-4x^2+y^2
=-3x^2-3y^2
(2a+b)^2-(3a-b)^2+5a(a-b)
=4a^2+4ab+b^2-9a^2+6ab-b^2+5a^2-5ab
=5a

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