Question

$13^{14 } \times 3 - 13^{13} \times 2 - 13 ^{12}$
Am si eu nevoie de ea pana maine !

Answer 1

13^14 × 3 - 13^13 × 2 - 13^12 =

13^12 × (13^2 × 3 - 13 × 2 - 1) =

13^2 × (169 × 3 - 26 - 1) =

13^2 × (507 - 26 - 1) =

169 × 480 =

81 120
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