问题
解答题
化简:(1)
|
答案
(1)
÷(3-x)•x2+x-6 x2+3x+9 x2+3x+9 x-2
=
×(x+3)(x-2) x2+3x+9
×1 3-x x2+3x+9 x-2
=-
;x+3 x-3
(2)(-
)2÷(-b a
)3•(-a b2
)4a b2
=
×(-b2 a2
)×b6 a3 a4 b8
=-
.1 a
化简:(1)
|
(1)
÷(3-x)•x2+x-6 x2+3x+9 x2+3x+9 x-2
=
×(x+3)(x-2) x2+3x+9
×1 3-x x2+3x+9 x-2
=-
;x+3 x-3
(2)(-
)2÷(-b a
)3•(-a b2
)4a b2
=
×(-b2 a2
)×b6 a3 a4 b8
=-
.1 a