Question

calculati :a)2³+3²-4⁰. b)(2⁵)¹²:2⁵⁶-3²⁰:3¹⁸. c)(2•2²•2⁵ )¹⁰:2⁷⁵. d)(2¹⁰+2¹¹+2¹²):2¹⁰;​

Answer 1

Explicație pas cu pas:

calculati :

a)2³+3²-4⁰= 8 + 9 - 1 = 16

b)(2⁵)¹²:2⁵⁶-3²⁰:3¹⁸= 2^60 : 2^56 - 3^(20-18) = 2^(60-56) - 3^2 = 2^4 - 9 = 16 - 9 = 7

c)(2•2²•2⁵ )¹⁰:2⁷⁵ = [2^(1+2+5)] ^10 : 2^75 = (2^8)^10 : 2^75 = 2^(8×10) : 2^75 = 2^80 : 2^75 = 2^(80-75) = 2^`5 = 32

d)(2¹⁰+2¹¹+2¹²):2¹⁰ = 2^10 × ( 1 + 2 + 2^2) : 2^10 = 3+4 = 7