Explicație pas cu pas:
a) (2^3 x 3^2 - 6^2) : 2^2 + 2=
= (8 x 9 - 36) :4 +2
= (72-36) :4+2=
=36:4+2=
=9+2=
=11
b) [(15^2 :5 -3^2) +12]:6=
=[(225:5-9) +12]:6=
=[(45-9) +12]:6=
=[36+12]:6=
=48:6=
=8
c) [(2^3)^4:(2^5) ^2+(5^3)^7:(5^4)^5]:3-3=
=[2^12 : 2^10+5^21:5^20]:3-3=
=[2^12-10 + 5^21-20]:3-3=
=[2^2 + 5^1]:3-3=
=[4+5]:3-3=
=9:3-3=
=3-3=
=0
d) 3^2 x 5 - 2^4:2=
=9 x 5 -16:2=
=45-8=
=37
e) 3x (5^2-4^2) -6=
=3x (25-16) -6=
=3x 9 -6=
=27-6=
=21
