Răspuns :
[tex] {2}^{n + 1} \times {3}^{n + 2} - {6}^{n} = {2}^{n} \times 2 \times {3}^{n} \times {3}^{2} - {6}^{n} = (2 \times 3) ^{n} \times 18 - {6}^{n} = {6}^{n} (18 - 1) = {6}^{n} \times 17[/tex]
Răspuns:
Explicație pas cu pas:
2ⁿ⁺¹ x 3ⁿ⁺² - 6ⁿ =
= 2ⁿ x 2¹ x 3ⁿ x 3² - 6ⁿ =
= (2ⁿx3ⁿ) x (2¹x3²) - 6ⁿ =
= (2x3)ⁿ x (2x9) - 6ⁿ =
= 6ⁿ x 18 - 6ⁿx1 =
= 6ⁿ x ( 18 - 1 ) =
= 6ⁿ x 17