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simplify (2x + p -c)2 - (2x-p+c)2

Dear Student,

Answer given by@Mahak is correct. 
Please correct the identity: a^2-b^2=(a-b)(a+b)

@Mahak Well Done..!!

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(2x + p - c)² - (2x - p + c) ²
= [(2x + p - c) + (2x - p + c)] [( 2x + p - c) - (2x - p + c)] … [a²+b² = (a+b) (a-b)]
= (2x + p - c + 2x - p + c) (2x + p - c - 2x + p - c)]
= 4x (2p - 2c)
= 8px - 8cx

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