Multiply the Rational Expressions $\frac { 3 x - 21 } { x } \cdot \frac { x ^ { 2 } + 3 x } { 7 x - 49 }$

question 48

Multiple Choice

Multiply the rational expressions. $\frac { 3 x - 21 } { x } \cdot \frac { x ^ { 2 } + 3 x } { 7 x - 49 }$

• A) \(\frac { 3 x ^ { 2 } + 9 x } { 7 x ^ { 2 } - 49 }\)
• B) \(\frac { 3 x ^ { 2 } - 63 } { 7 x - 49 }\)
• C) \(\frac { 3 ( x + 3 ) } { 7 }\)
• D) \(\frac { 7 ( x - 7 ) } { x }\)

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