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Popular >

expand (n-1)!*(n+1)

Solution

expand

(n - 1)! \cdot (n + 1)

Solution

n (n - 1)! + (n - 1)!

Solution steps

(n - 1)! (n + 1)

Apply the distributive law:

a (b + c) = ab + a c

a = (n - 1)!, b = n, c = 1

= (n - 1)! n + (n - 1)! \cdot 1

= n (n - 1)! + 1 \cdot (n - 1)!

Multiply:

1 \cdot (n - 1)! = (n - 1)!

= n (n - 1)! + (n - 1)!

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Frequently Asked Questions (FAQ)

What is expand (n-1)!*(n+1) ?
The solution to expand (n-1)!*(n+1) is n(n-1)!+(n-1)!