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Factorise. p^4 –81 ????????????????????????????????

Factorise.
p^4 –81 ????????????????????????????????

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
3 years ago
Dear Student

p^4–81
= (p^2)^2-(9)^2
= (p^2-9)(p^2+9)
= (p^2-3^2)(p^2+9)
=(p-3)(p+3)(p^2+9)

Thanks

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