Question

tìm x thuộc N

81=(x-5)^4

Answer 1

81 = 3⁴

=> ( x - 5 )⁴ => x = 5 + 3 = 8

Vậy x = 8

Answer 2

\(\left(x-5\right)^4=81\)

\(\Leftrightarrow\sqrt[4]{81}=3\)

\(\Leftrightarrow x-5=3\)

\(\Leftrightarrow x=3+5=8\)

Answer 3

\(81=\left(x-5\right)^4\)

\(\Rightarrow3^4=\left(x-5\right)^4\)

\(\Rightarrow x-5=3\)

\(\Rightarrow x=8\)

Answer 4

cam on mn nha

Answer 5

\(3^4=\left(x-5\right)^4\)

\(3=x-5\)

\(x=3+5\)

\(x=8\)

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Answer 6

81 = 3⁴ 

=> (x - 5)⁴ 

=> x = 5 + 3

=> x = 8

Vậy............