Question

7×3 la puterea 90 minus 12×3 la puterea 89,cine ma ajuta???
​

Answer 1

Răspuns:

$7 \times 3^{90} - 12 \times {3}^{89} = \\ \\ = {3}^{89} \times (7 \times 3 - 12) \\ \\ = {3}^{89} \times (21 - 12) = \\ \\ = {3}^{89} \times 9 = \\ \\ = {3}^{89} \times {3}^{2} = \\ \\ = {3}^{91}$

Succes! ♡︎♥︎♡︎

Answer 2

Răspunsul final este 3⁹¹