Question

10. efectuati calculele: 2,5²+1,2×{11+1,1×[6,5+2×(8,65-8,6)]} urgent!!​

Answer 1

Răspuns:

= 6,25+1,2·[11+1,1·(6,5+2·0,05)]

=6,25+1,2·[11+1,1·(6,5+0,1)]

=6,25+1,2·(11+1,1·6,6)

=6,25+1,2·(11+7,26)

=6,25+1,2·18,26

=6,25+21,912

=28,162

Answer 2

Răspuns: 28,162

Explicație pas cu pas:

$2,5^{2}+1,2\cdot\{11+1,1\cdot[6,5+2\cdot(8,65-8,6)]\}=$

$6,25+1,2\cdot\{11+1,1\cdot[6,5+2\cdot(8,65-8,6)]\}=$

$6,25+1,2\cdot[11+1,1\cdot(6,5+2\cdot0,05)]=$

$6,25+1,2\cdot[11+1,1\cdot(6,5+0,1)]=$

$6,25+1,2\cdot(11+1,1\cdot6,6)=$

$6,25+1,2\cdot(11+7,26)=6,25+1,2\cdot18,26=$

$6,25+21,912=\boxed{28,162}$