Final answer:
To write the expression 3√a²+b² without radicals using only positive exponents, rewrite the cube root as an exponent with a denominator of 3.
Step-by-step explanation:
The given expression is 3√ a²+b². In order to write this expression without radicals using only positive exponents, we need to rewrite the cube root as an exponent. The cube root can be written as a fractional exponent with a denominator of 3. So, the expression can be rewritten as (a²+b²)1/3.