Question

12. Simplify –3√ 2 + 3√ 8 . A. 3√ 2 B. –3√ 2 C. 0 D. 9√ 2

Answer 1

Your answer would be, A. 3√ 2. Hope I helped you :)

Answer 2

The answer is:  [A]:  3√ 2  .
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Explanation:
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 Simply:  -3√ 2  +  3√ 8 ;
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Let us simplify:  3√ 8 ;
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Let us simplify: 
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√ 8  ;   →  √ 8  =  √ 4 * √ 2  =  2√ 2 ;
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   →  √ 8  =  √ 4 * √ 2  = 2√ 2 ;
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  →   3√ 8  =  3 * 2√ 2  = 6√ 2 ;
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So, rewrite the original problem, substituting:  "6√ 2"  for "3√ 8" ;
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       -3√ 2   +   3√ 8  =  
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           -3√ 2  +  6√ 2  =  3√ 2 ; which is Answer choice: [A].
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