Question

Calculați: b) (5 la puterea 3•25-25) la puterea 2
c) (7la puterea2x31+31 la puterea2):2 la puterea4
d) (26 la puterea2+2 la puterea6x26):3 la puterea2
PLZZZ DAU 15 PUNCTE+COROANA
(P.S NU DIRECT REZULTATUL)

Answer 1

Salut! ♡

b)

$(5 {}^{3} \times 25 - 25) {}^{2}$

$(25(5 {}^{3} - 1)) {}^{2}$

$(25(125 - 1)) {}^{2}$

$(25 - 124) {}^{2}$

$3100 {}^{2}$

c)

$(7 {}^{2} \times 31 + 31 {}^{2} ) \div 2 {}^{4}$

$31(7 {}^{2} + 31) \div 2 {}^{4}$

$31(49 + 31) \div 2 {}^{4}$

$31 \times 80 \div 2 {}^{4}$

$\frac{31 \times 80}{2 {}^{4} }$

$\frac{31 \times 80}{16}$

$31 \times 5 = 155$

d)

$( {26}^{2} + {2}^{6} \times 26) \div 3 {}^{2}$

$26(26 + 2 {}^{6} ) \div 3 {}^{2}$

$26(26 + 64) \div 3 {}^{2}$

$26 + 90 \div 3 {}^{2}$

$\frac{26 \times 90}{3 {}^{2} }$

$\frac{26 \times 90}{9}$

$26 \times 10 = 260$

Succes!