ACT 2019 June(72F) Math Question 4 Explanation - ACT Helper

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2019 June(72F) Math Question 4
Exponents, Radicals, & Scientific Notation
- Exponent Expressions
Choice J
$3 x^{9} \cdot 5 x^{9}$ $= 3 \times 5 \times x^{9 + 9}$ $= 15 x^{18}$
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