先化简
|
原式=
÷[-(m-3) 2(m-2)
](m+2)(m-2)-5 m-2
=
÷-(m-3) 2(m-2) m2-9 m-2
=
•-(m-3) 2(m-2) m-2 (m+3)(m-3)
=-1 2(m+3)
∵2m-4≠0,(m+3)(m-3)≠0,
m≠2,m≠±3,
∴取m=1,
原式=-
=-1 2×(1+3)
.1 8
先化简
|
原式=
÷[-(m-3) 2(m-2)
](m+2)(m-2)-5 m-2
=
÷-(m-3) 2(m-2) m2-9 m-2
=
•-(m-3) 2(m-2) m-2 (m+3)(m-3)
=-1 2(m+3)
∵2m-4≠0,(m+3)(m-3)≠0,
m≠2,m≠±3,
∴取m=1,
原式=-
=-1 2×(1+3)
.1 8