Question

Factories : 1-y² - 2yz - z²
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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

(x-y-z)(x+y+z)

Step-by-step explanation:

x²-y²-2yz-z²

=x²-(y²-2yz-z²)

=x²-(y+z)²

=(x-y-z)(x+y+z)