For this case we have:
Expression 1:
[tex]\frac {2m ^ 2-4m} {2 (m-2)} = \frac {2m (m-2)} {2 (m-2)} = m[/tex]
Expression 2:
[tex]\frac {m ^ 2-2m + 1} {(m-1)} = \frac {(m-1) (m-1)} {(m-1)} = (m-1)[/tex]
Expression 3:
[tex]\frac {m ^ 2-3m + 2} {m ^ 2-m} = \frac {(m-2) (m-1)} {m (m-1)} = \frac {(m-2) } {m}[/tex]
Expression 4:
[tex]\frac {m ^ 2-m-2} {m ^ 2-1} = \frac {(m-2) (m + 1)} {(m + 1) (m-1)} = \frac {( m-2)} {(m-1)}[/tex]
Answer:
1.D
2.B
3.A
4.C
