Question

A)11 la puterea 2x+1<11 la puterea 7 b) 13 la puterea x-2>13 la puterea 2001 c)9 la puterea x+1< sau egal decat 3 la puterea 12 ajutati-ma va rooooggg dau coroana

Answer 1

a   2x < 7
      x< 7 : 2
      x<3,5
x apartine { 0,1,2,3}
b   x-2>2001
     x>2001+2
     x>2003
x apartine { 2004 ,2005 ,2006,etc}
c 3 la 12 = 9 la 6
  x+1<sau egal cu 6
x< sau egal 6-1
x< sau egal 5
x aprtine {0,1,2,3,4,5}
  

Answer 2

A)11 la put.2x+1<11la put.7
121la put.x+1<19487171
x=121-1
x=120
121la put120+1<19487171
121 la put.121<19487171
B)...................................................................................................
C)...................................................................................................