Seven is the only amount D for which the equation 2n − D = x2 has much more than two remedies for n and x normal. Particularly, the equation 2n − seven = x2 is named the Ramanujan–Nagell equation. Polynices was among the seven commanders. Immediately after A great deal https://elliottijcvp.thezenweb.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-7-day-pill-organizers-76159239