1、-16m^2-48m^4+24m^62、3a(b²+9)²-108ab²3、(x-y)²-10(x-y)+25

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1、-16m^2-48m^4+24m^62、3a(b²+9)²-108ab²3、(x-y)²-10(x-y)+25

1、-16m^2-48m^4+24m^62、3a(b²+9)²-108ab²3、(x-y)²-10(x-y)+25
1、-16m^2-48m^4+24m^6
2、3a(b²+9)²-108ab²
3、(x-y)²-10(x-y)+25

1、-16m^2-48m^4+24m^62、3a(b²+9)²-108ab²3、(x-y)²-10(x-y)+25
1、-16m^2-48m^4+24m^6
=-8m^2(2+6m^2-3m^4)
2、3a(b^2+9)^2-108ab^2
=3a[(b^2+9)^2-36b^2]
=3a(b^2+9+6b)(b^2+9-6b)
=3a(b+3)^2(b-3)^2
3、(x-y)^2-10(x-y)+25
=(x-y-5)^2

因式分解么
T1
-8m^2( 2 + 6m^2 - 3m^4 )
T2
3a [ ( b^2 - 9 )^2 ]
T3
( x - y - 5 )^2