The Total solution for NCERT class 6-12
X
15
17
19
20 + p
23
f
2
3
4
5p
6
⇒ 5p2 +100p + 295 = 20 (15 + 5p)⇒ 5p2 +100p + 295 = 300 + 100p⇒ 5p2 +100p – 100p = 300 – 295⇒ 5p2 =5 ⇒ p2 = 5/5 = 1⇒ P= ±1P = -1 i s not possible∴ p= 1