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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35.5 kilograms
An average human's brain is 1.5 kilograms.
1.5 + 34 = 35.5
