matrices doubt

Can anyone pls explain what they did to p^4 to change it from (1-p)^2 to 2i -3p
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@Apu
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Gamertug
Gamertug9mo ago
i will write p^2 as P2 P2 = I - P P4 = I + P2 - 2P P4 = I + (I - P) - 2P P4 = 2I -3P
Deleted User
Deleted User9mo ago
why
Cyrix
CyrixOP9mo ago
Ohh I thought it was some property or smthn like that Thnx
Sam
Sam9mo ago
Unhone P² ki value pichle equation se insert kiya
Cyrix
CyrixOP9mo ago
+solved @Gamertug
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