Question

calculează următorul exercițiu

Answer 1

$\it = (5^{15}:5^4-5^{17}:5^7):(5^{27}:5^{18})=(5^{11}-5^{10}):5^9=5^{10}(5-1):5^9=\\ \\ =4\cdot5^{10}:5^9=4\cdot5=20$

Answer 2

Răspuns:

[5¹⁵:25²-5¹⁷:(125²x5)]:[(5⁹)³:25⁹]=

[5¹⁵:5⁴-5¹⁷:(5⁶x5)]:(5²⁷:5¹⁸)=

(5¹¹-5¹⁷:5⁷):5⁹=

(5¹¹-5¹⁰):5⁹=

(5-1)x5¹⁰:5⁹=

4x5=20