Question

(13+n) (n-15) expand using formula
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Answer 1

Terms of Binomial Expansion

(x + y)n + (x−y)n = 2[C0 xn + C2 xn-1 y2 + C4 xn-4y4 + …] (x + y)n – (x−y)n = 2[C1 xn-1 y + C3 xn-3y3 + C5 xn-5 y5 + …]

Answer 2

Step-by-step explanation:

(13+n)(n-15)

=13(n-15) +n(n-15)

=13n-195 +n²-15n

=n²-2n-195