a) �=(2−3)2+23A=(2−3)2+23
A= ∣2−3∣+23
�=2−3+23A=2−3+23
�=2+3A=2+3
b) �=18−250+38+273B=18−250+38+327
�=9.2−225.2+34.2+3.3.33B=9.2−225.2+34.2+33.3.3
�=32−2.52+3.22+3B=32−2.52+3.22+3
�=32−102+62+3B=32−102+62+3
�=3−2B=3−2
c) �=45−1−105+1255+2⋅52C=5−14−510+5125+2⋅25
�=4⋅(5+1)(5−1)(5+1)−2⋅55+1255+2⋅52C=(5−1)(5+1)4⋅(5+1)−52⋅5+5125+2⋅25
�=4⋅(5+1)(5)2−12−25+25+5C=(5)2−124⋅(5+1)−25+25+5
�=4⋅(5+1)5−1−25+5+5C=5−14⋅(5+1)−25+5+5
�=4⋅(5+1)4−5+5C=44⋅(5+1)−5+5
�=5+1−5+5C=5+1−5+5
�=6C=6.