To solve the given expression for \( y \), we need to simplify the terms inside the parentheses. Specifically, we need to handle the exponential and logarithmic functions, as well as the power of \( x \).
Simplify \( 4 e^{6 \ln x} \) using properties of exponents and logarithms.
Simplify \( 3 x^{2/3} \).
Combine the simplified terms to get the final expression for \( y \).
Step 1: Simplify \( 4 e^{6 \ln x} \)
Using the property of logarithms and exponents, \( e^{\ln a} = a \), we can simplify \( 4 e^{6 \ln x} \) as follows:
\[
4 e^{6 \ln x} = 4 (e^{\ln x})^6 = 4 x^6
\]
Step 2: Simplify \( 3 x^{2/3} \)
The term \( 3 x^{2/3} \) is already in its simplest form.
Step 3: Combine the Simplified Terms
Now, we combine the simplified terms to get the final expression for \( y \):
\[
y = 4 x^6 - 3 x^{2/3}
\]