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25la puterea 4 *5la puterea x=5la puterea 13

Răspuns :

25⁴·5ˣ = 5¹³ <=> (5²)⁴·5ˣ = 5¹³ <=> 5⁸·5ˣ = 5¹³ <=> 5⁸⁺ˣ =5¹³ <=>

8+x = 13 => x = 13-8 => x =5