- Can someone please answer my question?

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Every vector space is spanned by a linearly dependent set. True or False? Reasons? I'm so confused.. Please help how do i do these? According to the equation 3x²-30x+27=0, answer:
A) What is the sum of the roots?
B) And the product of the roots? Do you think it could ever be possible to travel past the speed if light? Please solve this question, its really hard!!!?