Mathematics

When you see negative exponents in a denominator, remember that dividing by a negative power is the same as multiplying by its positive counterpart—so $\frac{1}{k^{-3}} = k^3$. Once you rewrite it that way, you're just combining powers of the same base by adding their exponents. Keep track of which exponents you're adding and you'll land on a clean positive result.

When you see negative exponents in a denominator, remember that dividing by a negative power is the same as multiplying by its positive counterpart—so $\frac{1}{k^{-3}} = k^3$. Once you rewrite it that way, you're just combining powers of the same base by adding their exponents. Keep track of which exponents you're adding and you'll land on a clean positive result.