The exponent "product rule" tells us that, when multiplying two powers that have the same base, you can add the exponents.
For example:
4^2 x 4^18
= 4^(2+18)
= 4^20
<h3><u><em>Hope this helps!!!
</em></u></h3><h3><u><em>Please mark this as brainliest!!!
</em></u></h3><h3><u><em>Thank You!!!
</em></u></h3><h3><u><em>:)</em></u></h3>