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Multiply & divide rational expressions: Error analysis


Rutendo tried to perform the following multiplication and reduce to lowest terms:
This is his work:
Rewriting the first factor: 3x+152x+16=3(x+5)2(x+8)
Rewriting the second factor: x7x225=x7(x+5)(x5)
Finding excluded values: x±5 and x8
Multiplying and reducing to lowest terms:
What mistake did Rutendo make?
Choose 1 answer: