Question

determinati termenul necunoscut x stiind ca 2^31+2^30+2^29=x •2^28

am nevoie repedee​

Answer 1

Răspuns:

2^31+2^30+2^29=x •2^28

2^29•(2^2+2^1+1)= x• 2^28

2^29•(4+2+1)= x • 2^28

2^29• 7= x • 2^28

x= 7• 2^29 : 2^28

x= 7• 2^29-28

x= 7• 2^1

×= 14

SPER CA TE-AM AJUTAT!

Answer 2

Explicație pas cu pas:

${2}^{31} + {2}^{30 } + {2}^{29} = x \times {2}^{28}$

Il scoatem in fata parantezei:

${2}^{28} \times ( {2}^{3} + {2}^{2} + 2) = x \times {2}^{28}$

${2}^{28} \times 14 = x \times {2}^{28}$

$x = 14$