Question

3.Calculați:
a)(5²-2⁵:2):3-1²⁰¹⁹
b)(3²•2⁶-2⁵•6):12-2⁵
c)(7⁴-7³):(7²-7)-2³•5​

Answer 1

a)

$a) \: \: ( {5}^{2} - {2}^{5} \div 2) \div 3 - {1}^{1019} = \\ (25 - 32 \div 2) \div 3 - 1 = \\ 9 \div 3 - 1 = \\ 2$

$( {3}^{2} \times {2}^{6} - {2}^{5} \times 6) \div 12 - {2}^{5} = \\ (9 \times 64 - 32 \times 6) \div 12 - 32 = \\ 384 \div 12 - 32 = \\ 0$

(7⁴-7³):(7²-7)-2³•5=

(2401-343):(49-7)-8•5=

2058:42-40=

9

Answer 2

a) = 4

b) = 0

c) = 9

Sper că team ajutat !!