Question

the product using identity : ( a + 5)​

Answer 1

Step-by-step explanation:

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$(a + 5) ^{2}$

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$= (a + 5) ^{2}$

$= (a + 5)(a + 5)$

$= a(a + 5) + 5(a + 5)$

[ multiply using distributive property ]

$= {a}^{2} + 5a + 5a + 25$

[ now multiply them ]

$= {a}^{2} + 10a + 25$

[ now add 5a and 5a ]

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$= {a}^{2} + 10 a + 25$