x+y=-3,xy=-2,求x³y²+x²y³的值
x³y²+x²y³
= x²y² (x+y )
= (xy) ² (x+y)
= (-2 ) ² x (-3)
= 4 x (-3)
= -12
施主，我...
x+y=-3,xy=-2,求x³y²+x²y³的值
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