Question

calcule e simplifique as expressões. a) (7+4).(3² -2³ )
b)5² +2³ -2.(3+9)
c)6 ² :3 ² +4.10-12
d)(7 ² -1):3+2.5

Answer 1

a)11. (9-8)=11×1=11
b)25+9-2×12=25+9-24=10
c) 36÷9+40-12=4+26=30
d) 48÷3+10=16+10=26