Question

x⁴ -81 factories algebraic expressions​

Answer 1

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Answer 2

Answer:

X^4 - 81 = 0

(X²)² - (9)² = 0

(X² - 9) (X² + 9) = 0

(X² -9) = 0 OR (X² + 9) = 0

X² = 9. OR. X² = -9

But, X² can't be negative.

So, X² = 9

X = 3

I hope this is helpful