Question

Factorise x4 +y4-11x2y2
Plssss ans

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

(x2+y2-3xy) (x2-y2+3xy)

explanation:

first:-

use the identity

a2+b2+2ab

and use it for x4+y4

So, x4+y4+2 x2y2-11 x2y2

Then

subtract 2 x2y2 - 11 x2y2

x4 + y4 - 9 x2y2

=(x2+y2)2 - (3xy)2

= (x2 + y2- 3xy) (x2-y2+3xy)