what no should be subtracted from 92555 to make it a perfect square ?	Choose one:	A) 128	B) 158	C) 178	D) 139	E) 140

Rationale: root 92555 = 304.228 and 304 ^ 2 = 92416 92555 - 92416 = 139 should be subtracted from 92555 to make it a perfect square answer : d
Answer: D