Question

Ex 4 va rog dau coroana

Answer 1

a) (7-3)^3=4^3=64

b) (2+3)^2=5^2=25

c) 12^2-5^2=(12-5)^2=7^2=49

d) 40^2+30^2=(40+30)^2=70^2=4900

e) 50^2-30^2=(50-30)^2=20^2=400

f) 2^4+3^2•2•5^0=2^4+9•2•1=16+18=34

g) 5^2-3^2+4^2=(5-3+4)^2=6^2=36

h) 15^2-2^2•3^2=15^2-4•9=225-36=189

i)5^2+2•5•3+3^2=5^2+30+3^2=25+30+9=64