Question

Factorise 25x4 - 4y4, using appropriate identity.
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Answer 1

Answer:

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Answer 2

( 5x^2 + 2y^2 ) ( 5x^2 - 2y^2 )

Step-by-step explanation:

By using the identity ( a + b ) ( a - b ) = a^2 - b^2

25x^4 - 4y^4 = a^2 - b^2

Since, we can write 25 as 5^2, 4 as 2^2, x^4 as [(x^2)^2] and [(y^2)^2]

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