Question

factarise using this​

Answer 1

Step-by-step explanation:

x4 – (y + z)4 = (x2)2 – [(y + z)2]2

[∵ a2 – b2 = (a – b)(a + b)]

= [x2 – (y + z)2] [x2 + (y + z)2]

= [x – (y + z)] [x + (y + z)] [x2 + (y + z)2]

= (x – y – z) (x + y + z) [x2 + (y + z)2]

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Answer 2

Step-by-step explanation:

(X) ^4 - (y+2)^4

[(x)^2+(y+2)^2] [(x)^2-(y+2)^2]