Question

factorise
1 + y² + x² + x²y²
​

Answer 1

Answer:

(1−x² )(1−y² )+x²y²

1−x² −y² +x² y²+4xy

(1+2xy+x² y² )−(y² +x² −2xy)

(1+xy)² −(x−y)²

(1+xy+x−y)(1+xy−x+y)

Step-by-step explanation:

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Answer 2

Answer:

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