If the sum of a number and its square is 210, what is the number?
Choices:
A) 16	B) 14	C) 25	D) 87	E) 171

Rationale: "explanation : let the integer be x . then , x + x 2 = 210 x 2 + x - 210 = 0 ( x + 15 ) ( x – 14 ) = 0 x = 14 answer : b"
Answer: B