Question

a^4+7a^2-8 factorise​

Answer 1

Ans:- a^4 + 7a^2 - 8

= a^4 + 8a^2 - a^2 - 8

= a^2(a^2 + 8 ) - 1(a^2 + 8)

= (a^2 - 1) (a^2 + 8)

= (a^2 - (1)^2) (a^2 + 8)

= (a + 1) (a - 1 ) (a^2 + 8)

here is your answer

hope it will help you

Answer 2

Answer:

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