x^2-y^2-z^2-2yz因式分解如题快

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x^2-y^2-z^2-2yz因式分解如题快
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x^2-y^2-z^2-2yz因式分解如题快
x^2-y^2-z^2-2yz因式分解
如题

x^2-y^2-z^2-2yz因式分解如题快
x^2-y^2-z^2-2yz
=x^2-(y^2+z^2+2yz)
=x^2-(y+z)^2
=(x+y+z)(x-y-z)

x^2-y^2-z^2-2yz
=x^2-(y^2+z^2+2yz)
=x^2-(y+z)^2
=(x+y+z)(x-y-z)

x^2-y^2-z^2-2yz
=x^2-[y^2+z^2+2yz]
=x^2-(y-z)^2
=(x+y+z)(x-y-z)