Class VII

Whole number such that twice of its square added to itself gives 10
  1. 1
  2. 2
  3. 10
  4. 12
If x=3 is solution of x2 + kx + 15, value of k is
  1. k = -8,x = 5
  2. k = 8, x = 3
  3. k = 6, x = 5
  4. None of above
Factorization of x + xy + 2y + 2y2 gives
  1. x2 + 2xy
  2. x + y
  3. (1 + y)(x + 2y)
  4. None of above
Expansion and simplification of 8(3h - 4) + 5(h - 2) gives
  1. 24h - 37
  2. 36 - 4h
  3. 29h - 42
  4. 38 + 42h
Factorization of 4x - 20 yields
  1. 2x - 4
  2. 4(x - 5)
  3. 5(x - 4)
  4. 20x
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