Class IX

The factors of x2−9 is
  1. (x+3)*(x+3)
  2. (x-3)*(x-3)
  3. (x-3)*(x+3)
  4. None of these
The zero of the polynomial (x−3)2 - (x + 3)2 is
  1. -2
  2. 2
  3. 1
  4. 0
-3 is a zero of the polynomial
  1. 3x² + 6
  2. 3x² + 6x
  3. 3x² + 9x
  4. 3x² - 9x
The zero of the polynomial (x−2)²−(x+2)² is
  1. 2
  2. 1
  3. -2
  4. 0
(999)3 equals to
  1. 997002999
  2. 99700299
  3. 99702999
  4. 97002999
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