Question

Simplify the radical expression -4√160 A: -4√16 B: √10 C: -16√10 D: -4√80

Answer 1

The answer is:  [C]:  " -16√10 " .
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Note:
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  " -4√160"  = -4 * √160 " ; 
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√160 = √16 *√10 = 4√10 ;

-4 * * 4√10 = -16√10 ;  

which is:  Answer choice:  [C]:  " -16√10 " .
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