Multiply
- $( 3 \sqrt { 3 } + 8 \sqrt { 7 } ) ( 5 \sqrt { 3 } + 10 \sqrt { 7 } )$

question 261

Multiple Choice

Multiply.
- $( 3 \sqrt { 3 } + 8 \sqrt { 7 } ) ( 5 \sqrt { 3 } + 10 \sqrt { 7 } )$

• A) \(15 \sqrt { 3 } + 80 \sqrt { 7 }\)
• B) \(15 \sqrt { 3 } + 80 \sqrt { 7 } + 70 \sqrt { 21 }\)
• C) \(- 515 + 70 \sqrt { 21 }\)
• D) \(605 + 70 \sqrt { 21 }\)