First, combine the terms with the same base. For the base q q q, we have q4 q^{4} q4 and q−1 q^{-1} q−1. For the base h h h, we have h−4 h^{-4} h−4 and h4 h^{4} h4.
q4h−4h4q−1=q4q−1h−4h4 q^{4} h^{-4} h^{4} q^{-1} = q^{4} q^{-1} h^{-4} h^{4} q4h−4h4q−1=q4q−1h−4h4
Use the laws of exponents to simplify the expression. Specifically, am⋅an=am+n a^{m} \cdot a^{n} = a^{m+n} am⋅an=am+n.
q4q−1=q4+(−1)=q3 q^{4} q^{-1} = q^{4 + (-1)} = q^{3} q4q−1=q4+(−1)=q3 h−4h4=h−4+4=h0 h^{-4} h^{4} = h^{-4 + 4} = h^{0} h−4h4=h−4+4=h0
Any non-zero number raised to the power of 0 is 1. Therefore:
h0=1 h^{0} = 1 h0=1
Now, combine the simplified terms:
q3⋅1=q3 q^{3} \cdot 1 = q^{3} q3⋅1=q3
The simplified expression with only positive exponents is:
q3 \boxed{q^{3}} q3
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