1.-4x+2x^2 2.-8m^2n-2mn 3.a^2b-2ab^2+ab 4.3x^3-3x^2-9x 5.-20
1个回答

1.-4x+2x^2

=2x(x-2);

2.-8m^2n-2mn

=-2mn(4m+1);

3.a^2b-2ab^2+ab

=ab(a-2b+1)

4.3x^3-3x^2-9x

=3x(x²-x-3);

5.-20x^2y^2-15xy^2+24y^3

=xy²(-20x-15+24y);

很高兴为您解答,skyhunter002为您答疑解惑

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