Expressing a number in scientific notation and factoring a cubic

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Basically I don't know anyone in real life that can help me with this, so I need help checking to see if my answers are correct :)

PART A

5) Express .00024 in Sci Notation

My answer: 2.4 x 10^-4

6) Factor the following completely: 3x^3 - 18x^2 + 24x

My Answer: (3x)(x - 4)(x - 2)

 

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Re: Please check my answers - 3

Both correct.