The two of the equation x ^ 2 + 2 (P + 1) x + 2p-5 = 0 are both negative numbers. The value range of the real number P is obtained

The two of the equation x ^ 2 + 2 (P + 1) x + 2p-5 = 0 are both negative numbers. The value range of the real number P is obtained

b²-4ac=4（p＋1）²－4（2p-5）
=4（p²-6p＋21）
=4（p-3）²＋48＞0
P is any real number
X1＋X2=-2（P＋1）＜0 P＞-1
X1·X2=2P-5＞0 P＞5/2
The total result is: P > 5 / 2

Elden Ring Premiere

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