Question

a⁴ - 81b⁴ maths class 8​

Answer 1

Step-by-step explanation:

(a^2-9b^2)^2

=a^4-18a^2b^2+81b^4

a^4-81b^4

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Answer 2

Step-by-step explanation:

1. convert this equation to a^2-b^2 and solve