Germany | Can you solve this? | Math Olympiad

[@anlesome5785]

What grade this calculation belong to?

[@rolandsing8380]

x^4=25^4 => x=+-5

[@napoearth]

Can’t we just eyeball that it’s 5?

[@chrisxu5384]

Agreed

[@lopesdareosa]

5x5x5x5=x.x.x.x Logo X=5

[@ulisses_nicolau_barros]

This equation has four solutions, including 5.

[@hangthuy458]

5×5×5×5=X×x×x×x
X^(1+1+1+1)=5^(1+1+1+1)
X^4=5^4
X=5

[@teadrinker7098]

This is really a 4th order equation, so there will be 4 solutions.

[@Christopher-e7o]

X,2×+5=8