我不是他舅来因式分解(y²+3y)-(2y+6)²x²-y²-z²+2yz

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我不是他舅来因式分解(y²+3y)-(2y+6)²x²-y²-z²+2yz
我不是他舅来
因式分解(y²+3y)-(2y+6)²
x²-y²-z²+2yz

我不是他舅来因式分解(y²+3y)-(2y+6)²x²-y²-z²+2yz
(y²+3y)-(2y+6)²
=y²+3y-4y²-24y-36
=-3(y²+7y+12)
=-3(x+3)(x+4)
x²-y²-z²+2yz
=x²-(y-z)²
=(x-y+z)(x+y-z)

01

(y²+3y)-(2y+6)²
=y²+3y-4y²-24y-36
=-3(y²+7y+12)
=-3(x+3)(x+4)
x²-y²-z²+2yz
=x²-(y-z)²
=(x-y+z)(x+y-z)
以上答案为所求

(y²+3y)-(2y+6)²
=(y²+3y+2y+6)(y²+3y-2y-6)
=(y²+5y+6)(y²+y-6)
=(y+2)(y+3)²(y-2)
x²-y²-z²+2yz
=x²-(y-z)²
=(x+y-z)(x-y+z)

(y²+3y)-(2y+6)²=-3(Y+3)(Y+4)
X^2-Y^2-Z^2+2YZ=(X+Y-Z)(X-Y+Z)

为什么一定要他就回答呢?