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x^2:(3^2)^2=2^2, x=?

Răspuns :

(X^2):(3^2)^2=2^2

X^2:(9^2)=2^2

x^2 =(2^2)*(9^2)

x^2 =(2*9)^2

x^2 =18^2

x=+/-18
x²:(3²)²=2²
x²:9²=4
x²:81=4
x²=4·81
x₁=18
x₂=-18