please answer these questions
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Use Quadratic identities which are
Identity I: (a + b)2 = a2 + 2ab + b2
Identity III: a2 – b2= (a + b)(a – b)
Identity IV: (x + a)(x + b) = x2 + (a + b) x + ab.
Identity V: (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca.
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Identity I: (a + b)2 = a2 + 2ab + b2
Identity III: a2 – b2= (a + b)(a – b)
Identity IV: (x + a)(x + b) = x2 + (a + b) x + ab.
Identity V: (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca.
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