计算:
|
原式=
÷[2x-6 x-2
-(x+2)]5 x-2
=
÷[2(x-3) x-2
-5 x-2
](x+2)(x-2) x-2
=
÷2(x-3) x-2 5-(x2-4) x-2
=
÷2(x-3) x-2 9-x2 x-2
=
•2(x-3) x-2 x-2 (3+x)(3-x)
=2(x-3)•
=-1 -(x+3)(x-3)
.2 x+3
计算:
|
原式=
÷[2x-6 x-2
-(x+2)]5 x-2
=
÷[2(x-3) x-2
-5 x-2
](x+2)(x-2) x-2
=
÷2(x-3) x-2 5-(x2-4) x-2
=
÷2(x-3) x-2 9-x2 x-2
=
•2(x-3) x-2 x-2 (3+x)(3-x)
=2(x-3)•
=-1 -(x+3)(x-3)
.2 x+3