What is the value of 10C6 ?

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?