Use the Product Rule to Simplify Square Roots
- $\sqrt { 7 x ^ { 2 } } \cdot \sqrt { 21 x }$

Multiple Choice

Use the Product Rule to Simplify Square Roots
- $\sqrt { 7 x ^ { 2 } } \cdot \sqrt { 21 x }$

A) $7 | x | \sqrt { 3 x }$
B) $7 | x | \sqrt { 3 }$
C) $7 x ^ { 2 } \sqrt { 3 x }$
D) $7 | x | \sqrt { 3 x ^ { 2 } }$