Question

factorise
x^4+y^4-3x^2y^2​

Answer 1

Answer:

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Answer 2

The value of x

4

+y

4

−3x

2

y

2

is

x

4

+y

4

−2x

2

y

2

−x

2

y

2

=(x

2

−y

2

)

2

−(xy)

2

=(x

2

−y

2

+xy)(x

2

−y

2

−xy)