因式分解(y+2)x²—24+(y+2)x—12y

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因式分解(y+2)x²—24+(y+2)x—12y

(y+2)x²—24+(y+2)x—12y
=(y+2)x²+(y+2)x—12(y+2)
=(y+2)(x²+x-12)
=(y+1)(x+4)(x-3)