Give me a topic for my mathematical investigation.​

For what value of x does 4x = (1/8) x + 5?

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

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals