x^15-9x^9+25x^9等于多少

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x^15-9x^9+25x^9等于多少x^15-9x^9+25x^9等于多少x^15-9x^9+25x^9等于多少x^15-9x^9+25x^9=x^15+16x^9=x^9(x^6+16)等于8等于

x^15-9x^9+25x^9等于多少
x^15-9x^9+25x^9等于多少

x^15-9x^9+25x^9等于多少
x^15-9x^9+25x^9
=x^15+16x^9
=x^9(x^6+16)

等于8
等于8
等于8
等于8