Question

Efectuati 1+2×3^4 ;10-2^3 (2+3)^2; 2×3^2 ; 2-40^30÷40^30 (2×3+5)^2 ; 1+2+2^2 3×(3^2+3^3); 9^2×2003-81^2

Answer 1

1+2×3^4=1+2×81=1+162=163 10-2^3=10-8=2 (2+3)^2=5^2=25 2×3^2=2×9=18 (2×3+5)^2=11^2=121 1+2+2^2=1+2+4=3+4=7 3×(3^2+3^3)=3×(9+27)=3×36=108 9^2×2003-81^2=81×2003-6561=162243-6561=155682