Easy
Aoi tried to reduce the following expression to lowest terms:
This is her work:
Factoring the numerator:
Factoring the denominator:
Finding excluded values: : and
Reducing to lowest terms:
What mistake did Aoi make?
She excluded , which doesnot make the denominator equal to 0 .
She excluded , which doesnot make the numerator equal to zero.
She excluded whick doesnot make, the new expression equal to 20 .
She did not factor the denominator correctly.
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