Simplify each expression. justify each step. (5n • 9) • 2n

5n * 9 = 45n

45n * 2n = 90n^2

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Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )