(2x-3)^2-(x-9)^2因式分解

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(2x-3)^2-(x-9)^2因式分解
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(2x-3)^2-(x-9)^2因式分解
(2x-3)^2-(x-9)^2因式分解

(2x-3)^2-(x-9)^2因式分解
(2x-3)²-(x-9)²
=[(2x-3)+(x-9)][(2x-3)-(x-9)]
=(3x-12)(x+6)

(2x-3)^2-(x-9)^2
=(2x-3-x+9)(2x-3+x-9)
=3(x+6)(x-4)