Question

12. Efectueaza
a) 3+ [4 +(5-24) -21° =
b) 1 + 2-32 +3-02-14
c) 5+ {[(2-32 - 44 2+2:6-11​

Answer 1

Răspuns:

a) 3+ [4 +(5-4) -2] ³ =      

= 3+(4+1-2)³=

=3+(5-2)³=

=3+(3) ³=

=3+27=

=30

b) 1+2 ×3³ + 3 × (2-1)⁴=

= 1+2 × 27 + 3 × 1⁴=

= 1+54+3 ×1=

= 1+54+3=

=55+3=

=58

c) 5+{[(2 × 3²-4²)× 2+2³]:6-1}²=

=5+{[(2 ×9+16)×2+8]:6-1}²=

=5+{[(18+16)×2+8]:6-1}²=

=5+[(34×2+8):6-1]²=

=5+[(68+8):6-1]²=

=5+(76:6-1)²=

=5+(12-1)²=

=5+11²=

=5+121=

=126        (la ultimul punct nu mi-a iesit impartirea asa ca am aproximat.)