If the sum of a number and its square is 182, what is the number?
Choose the correct choice.
A) 13  B) 15  C) 17  D) 19  E) 21
Sol.   Let the numbers be x.   Then, x + x2 = 182   ⇔ x2 + x - 182 = 0   ⇔ (x+14)(x-13) = 0   ⇔ x = 13.   13nswer 13
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If the sum of a number and its square is 182, what is the number?