4^3:2^2-18^0×[5^10:5^9-6^2×(7^15:7^13-72)]
=
=2^6:2^2-1×[5^1-6^2×(7^2-72)]
=
=2^4-[5-36×(49-72)]
=
=2^4-[5-36×(-23)]
=
=2^4-(5+828)
=
=16-833=
=-817
varianta cu 7^2 in loc de 72
4^3:2^2-18^0×[5^10:5^9-6^2×(7^15:7^13-7^2)]
=
=2^6:2^2-1×[5^1-6^2×(7^2-7^2)]
=
=2^4-(5-36×0)
=
=2^4-(5-0)
=
=16-5=11