12. Simplify –3√ 2 + 3√ 8 .
A. 3√ 2
B. –3√ 2
C. 0
D. 9√ 2
2 answers:
Your answer would be, A. <span>3√ 2. Hope I helped you :)</span>
The answer is: [A]: 3√ 2 .
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Explanation:
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Simply: -3√ <span>2 + 3√ 8 ;
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Let us simplify: 3</span>√ 8 ;
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Let us simplify:
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</span>√ 8 ; → √ 8 = √ 4 * √ 2 = 2√ 2 ;
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</span>
→ √ 8 = √ 4 * √ 2 = 2√ 2 ;
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</span>→ 3√ 8 = 3 * 2√ 2 = 6√ 2 ;
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So, rewrite the original problem, substituting: "6</span>√ 2" for "3√ 8" ;<span>
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</span><span> -3√ 2 + 3√ 8 =
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-</span>3√ 2 + 6√ 2 = 3√ 2 ; which is Answer choice: [A].
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