MHB Expressing a number in scientific notation and factoring a cubic

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The discussion focuses on checking the correctness of answers related to scientific notation and factoring a cubic expression. The user expressed the number 0.00024 in scientific notation as 2.4 x 10^-4, which is confirmed to be correct. Additionally, the user factored the cubic expression 3x^3 - 18x^2 + 24x as (3x)(x - 4)(x - 2), which is also verified as correct. The thread emphasizes the importance of peer validation in solving mathematical problems. Overall, both answers provided are accurate.
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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.
 
Thread 'Erroneously finding discrepancy in transpose rule'

Thread 'Erroneously finding discrepancy in transpose rule'

Obviously, there is something elementary I am missing here. To form the transpose of a matrix, one exchanges rows and columns, so the transpose of a scalar, considered as (or isomorphic to) a one-entry matrix, should stay the same, including if the scalar is a complex number. On the other hand, in the isomorphism between the complex plane and the real plane, a complex number a+bi corresponds to a matrix in the real plane; taking the transpose we get which then corresponds to a-bi...
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