Question

Calculati;
a)(5^2-2^5:2):3-1^2005
b)(3^2*2^6-2^5*6):12-2^5
c)(7^4-7^3):(7^2-7)-2^3*5.

Answer 1

a) (5^2-2^5:2):3-1^2005
=(25-32:2):3-1
=(25-16):3-1
=9:3-1
=3-1
=2
b)(3^2x2^6-2^5x6):12-2^5
=(9x64-32x6):12-32
=(576-192):12-32
=384:12-32
=32-32
=0
c) (7^4-7^3):(7^2-7)-2^3x5
=(2401-343):(49-7)-8x5
=2058:42-40
=49-40
=9

Sper ca te-am ajutat!