QOTD 4/14/2026

Which expression is equivalent to $(p^3q^-2r^5)(p^-2q^3r^4)$, where $p, q,$ and $r$ are positive?

A) $p^{-6}q^{-6}r^9$ B) $p^{-6}q^{-6}r^{20}$ C) $pqr^9$ D) $p^6q^6r^{20}$

The correct answer is (C).

current priority level - we all want this one

It is far from unusual to not currently have classic exponent rules at your fingertips. But, this is precisely part of what we are doing together.

If you selected (B), we get it: it definitely could have felt correct to multiply the exponents. That said, seeing that (C) is the correct answer, it would likely come back to any of us that when different variables terms are being multiplied as they are here, we add the exponents.

Something we miss today is something we’re less likely to miss the next time round. Good stuff.🔥

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