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1023

Q: Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is  ?

  • 1
    5
  • 2
    4
  • 3
    7
  • 4
    6
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Answer : 1. "5"
Explanation :

Answer: A) 5 Explanation: Let the number be x. Then,   3x2 - 4x = x + 50   3x2- 5x - 50 = 0   (3x + 10)(x - 5) = 0   x = 5

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