Răspuns:
a)15+2×5-5^2=
=15+10-25=
=25-25=
=0
b)10÷2×5-5^2=
=5×5-25=
=25-25=
=0
c)250÷5×2+10÷5×2-100=
=50×2+2×2-100=
=100+4-100=
=104-100=
=4
d)2^2×4^2×8^2:16^3=
=2^2×(2^2)^2×(2^3)^2÷(2^4)^3=
=2^2×2^4×2^6÷2^12=
=2^1=
=2
e)3^6×9^3×27^2÷81^4=
=3^6×(3^2)^3×(3^3)^2÷(3^4)^4=
=3^6×3^6×3^6÷3^16=
=3^2=
=9
f)1×4÷2×6÷3×5÷5÷4=
=4÷2×6÷3×5÷5÷4=
=2×6÷3×5÷5÷4=
=12÷3×5÷5÷4=
=4×5÷5÷4=
=20÷5÷4=
=4÷4=
=1
g)12^2+(2^2×3)^2-24^2÷2÷
=144+(4×3)^2-576÷2=
=144+12^2-288=
=144+144-288=
=288-288=
=0
h)10^3÷{123+34÷[(2×3^2)^2÷18-1]}=
=1000÷{123+34÷[(2×9)^2÷18-1]}=
=1000÷[123+34÷(18^2÷18-1)]=
=1000÷[123+34÷(324÷18-1)]=
=1000÷[123+34÷(18÷18-1)]=
=1000÷[123+34÷(1-1)]=
=1000÷(123+34÷0)=
=1000÷(157÷0)=
=1000÷0=
=0
Restul nu mai am timp acum.
