Question

{2[(-(7+3-5)) +√25+ 2^2] -[(5)(8) ÷2]+3[2+7]} -(5〖^2〗+1) =​
eliminar signos de agrupación y simplificar resultados
ayuda por favor T-T!!!​

Answer 1

$\{2\lbrack - (7 + 3 - 5)) + \sqrt{25} + {2}^{2} \rbrack - \lbrack(5)(8) \div 2\rbrack + 3\lbrack2 + 7\rbrack\} - ( {5}^{2} + 1) \\ \\ = \{2\lbrack - 5+ 5 + 4\rbrack - \lbrack20\rbrack + 3(9)\} - 26 \\ \\ = \{2\lbrack4\rbrack - \lbrack20\rbrack + 27\} - 26 \\ \\ = \{8 - 20 + 27\} - 26 \\ \\ = \{ - 1\} - 26 \\ \\ = - 1 - 26 \\ \\ = - 27$