What is the largest possible value of cc if 5c+(d−12)^2=235?  Choose the correct choice from the following choices
A) 17	B) 25	C) 35	D) 42	E) 47

Rationale: to maximize c , we should minimize ( d - 12 ) ^ 2 . ( d - 12 ) ^ 2 is a square of a number , thus its smallest possible value is 0 ( for d = 12 ) . in this case we ' d have 5 c + 0 = 235 - - > c = 47 . answer : e .
Answer: E