Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: Choose the correct choice from the following choices:  A) 4  B) 5  C) 6  D) 7  E) 10
Let the number be x. Then,   3x2 - 4x = x + 50   3x2 - 5x - 50 = 0   (3x + 10)(x - 5) = 0   x = 5   ANSWER:5
<result>B</result>
Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: