Question

PLEASE HELP QUICKLY

In the terms of (a + b ) n : The exponents of a start at _ and increase or _decrease_ until they reach _ . The exponents of b start at _ and increase or decrease until they reach _

Answer 1

The exponents of a start at n and decrease until they reach 0 . The exponents of b start at 0 and increase until they reach n

Explanation:

The general formula for
`(a+b)^n` is:

`a^n + C_1a^(n-1)b + C_2a^(n-2)b^2 + ... + C_(n-1)a^2b^(n-2) + C_nab^(n-1) + b^n`

Therefore, the exponents of a start at n and decrease until they reach 0 . The exponents of b start at 0 and increase until they reach n