Matematika 12

Greg Attwood, Jack Barraclough, Ian Bettison, Alistair Macpherson, Bronwen Moran, Su Nicholson, Diane Oliver, Joe Petran, Keith Bledger, Harry Smith, Geoff Staley, Robert Ward-Penny dhe Dave Wilkins

Pyetja

Gjej bashkësinë e vlerave të xx për të cilat:

  1. 2(x3)02(x-3) \ge 0
  2. 8(1x)>x18(1-x) > x-1
  3. 3(x+7)8x3(x+7) \le 8-x
  4. 2(x3)(x+12)<02(x-3)-(x+12)<0
  5. 1+11(2x)<10(x4)1+11(2-x) < 10(x-4)
  6. 2(x5)3(4x)2(x-5) \ge 3(4-x)
  7. 12x3(x3)<4512x-3(x-3)<45
  8. x2(5+2x)<11x-2(5+2x)<11
  9. x(x4)x2+2x(x-4) \ge x^2+2
  10. x(5x)3+xx2x(5-x) \ge 3+x-x^2
  11. 3x+2x(x3)2(5+x2)3x+2x(x-3) \le 2(5+x^2)
  12. x(2x5)4x(x+3)29x(2x-5) \le \dfrac{4x(x+3)}{2}-9