Question

solve using identities (a+4) (a+4)​

Answer 1

Answer:

(a+4) (a+4) =(a+4) ^2

=a^2+8a+16

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Answer 2

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$identity \: used....... \\ (a + {b})^{2} = {a}^{2} + 2ab + {b}^{2} \\ \\ so..... \\ (a + 4)(a + 4) \: ....can \: also \: be \: written \: as \: (a + {4})^{2} \\ (a + {4})^{2} \\ = {a}^{2} + 2(a \times 4) + {4}^{2} \\ = {a}^{2} + 8a + 16$
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