the corfficient of 'a' in the product of (a+7)(a-5) is (plz answer with working
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Step-by-step explanation:
( a + 7 ) ( a - 5 )
= a ( a - 5 ) + 7 ( a - 5 )
= a ( a ) - a ( 5 ) + 7 ( a ) + 7 ( - 5 )
= a^2 - 5a + 7a - 35
= a^2 + 2a - 35
Here,
The coefficient of a is 2.
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