please Answer the 5 and 7 question with full formula. please don't scam.
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Step-by-step explanation:
5) (n-1)(n-6)
=> n(n-6)-1(n-6)
=> n^2-6n-1(n-6)
=> n^2-6n-(n-6)
=> n^2-6n-n+6
=> n^2-7n+6 [ANS]
7) (y-7)(y+3)
=> y(y+3)-7(y+3)
=> y^2+3y-7(y+3)
=> y^2+3y-7y-21
=> y^2-4y-21 [ANS]
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