Name: SAT Math Help & School Math Mastery
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#15211

radicals

expressions

exponents

hard

120 sec

The expression $2 3 5^{3} x^{12} \cdot 4 3^{4} x^{2}$ is equivalent to $a x^{b}$ , where $a$ and $b$ are positive constants and $x > 1$ . What is the value of $a + b$ ?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.