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If p=2-a prove that a²+6ap+ p⁸- …

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If p=2-a prove that a²+6ap+ p⁸- 8=0

Posted by Muskan Garg 5 years ago

CBSE > Class 09 > Mathematics

2 answers

Dinesh G 5 years ago

,ddddd

1Thank You

Gaurav Seth 5 years ago

It is given that ,

p = 2 - a -------( 1 )

LHS = a³ + 6ap + p³ - 8

= a³ + 6a( 2 - a ) + ( 2-a )³ - 8 [ from(1)]

= a³ +12a-6a²+2³-3×2²a+3×2a²-a³-8

= a³ + 12a - 6a² + 8 - 12a + 6a²- a³ - 8

= 0

= RHS

Hence proved.

1Thank You

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CBSE > Class 09 > Mathematics