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13-03-2019
Mathematics

contestada

Simplify -3sqrt2 + 3sqrt8.

A. 9sqrt2
B. 0
C. 3sqrt2
D. -3sqrt2

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13-03-2019

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Аноним Аноним

13-03-2019

Answer:

3 sqrt2.

Step-by-step explanation:

-3sqrt2 + 3sqrt8

= -3 sqrt2 + 3 sqrt(4 * 2)

= -3 sqrt2 + 3 sqrt4 sqrt2

= -3 sqrt2 + 3*2 sqrt2

= - 3 sqrt 2 + 6 sqrt 2

= 3 sqrt2.

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