Question

2. Calculati
a) 10•[- 7 + 3 (2+9:3)]
b) 2• {-9+2•[ - 2^100:2^98 +4•(-2+ 10 : 2)] + 4};​

Answer 1

Explicație pas cu pas:

a) 10•[-7+3(2+9:3)]

=10•[-7+3(2+3)]

=10•(-7+3•5)

=10•(-7+15)

=10•8

=80

b) 2•{-9+2•[-2^100:2^98+4•(-2+10:2)]+4}

=2•{-9+2•[-2^100-98+4•(-2+5)]+4}

=2•[-9+2•(-2^2+4•3)+4]

=2•[-9+2•(2+7)+4]

=2•(-9+2•9+4)

=2•(-9+17+4)

=2•(8+4)

=2•12

=24