Question

Efectuați :
a) (7-3)³
b) (2+3)²
c) 12²-5²
d) 40²+30²
e) 50²-30²
f)2⁴+3²•2•1
g) 5²-3²+4²
h) 15²-2²•3²
i)5²+2•5•3+3²

Answer 1

A. (7-3)^3= 4^3= 4•4•4=64
B. 5^2=5•5=25
C. (12-5)^2=7^2=7•7=49
D. (40+30)^2=70^2=70•70=4900
E. (50-30)^2=20^2=20•20=4000
F. 2•2•2•2+3•3•2•1=16+18=34
G. 5•5-3•3+4•4=25-9+16=16+16=32
H. 15•15-2•2•3•3=225-4•9=225-32=193
I. 5•5+10•3+3•3=25+30+9=55+9=64