Simplify -3sqrt2 + 3sqrt8.
A. 9sqrt2
B. 0
C. 3sqrt2
D. -3sqrt2
2 answers:
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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