Question

x^8+9x⁴y⁴+81y⁴. With identity 5 [ (x+y+z)² ] .
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Answer 1

Answer:

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Answer 2

Answer:

Using the identity (a+b)

2

=a

2

+b

2

+2ab

We have, (xy+yz)

2

=(xy)

2

+(yz)

2

+2(xy)(yz)

=x

2

y

2

+y

2

z

2

+2xy

2

z