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Solve the equation: X to the 4th power - 81=0

Solve the equation: X to the 4th power - 81=0
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4 votes
Solve the equation: X to the 4th power - 81=0

User Bob Kuhar
by
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1 Answer

5 votes

x^4-81=0\\ x^4=81\\ x^4=3^4 \vee x^4=(-3)^4\\x=3 \vee x=-3
User Doannx
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