Question

Calculeaza ((17×(26-5 la puterea a doua)+4)-1 la puterea 102)×5

Answer 1

Buna!

((17(26-5²)+4)-1 la puterea 102) ori 5 =
((17(26-25)+4)-1) ori 5 =
((17 ori 1 +4)-1)ori 5=
((17+4)-1) ori 5 =
(21-1)ori 5=
20 ori 5 =
100

Bafta :)

Answer 2

$\Big\{\big[17\times(26-5^2)+4\big]-1^{105}\Big\}\times 5 = \Big\{\big[17\times(26-25)+4\big]-1\Big\}\times 5= \\ \\ = \Big[\big(17\times1+4\big)-1\big]\times 5= (21-1) \times 5 = 20 \times 5 = 100$