(﹣2x²y)³+(8x²)²×(-x)²×(-y)³ 怎么计算?
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(﹣2x²y)³+(8x²)²×(-x)²×(-y)³ 怎么计算?
(﹣2x²y)³+(8x²)²×(-x)²×(-y)³ 怎么计算?
(﹣2x²y)³+(8x²)²×(-x)²×(-y)³ 怎么计算?
原式=-8x(的6次方)y³+64x(的4次方) × x² × (-y³ )
=-8x(的6次方)y³+64x(的6次方)× (-y³ )
=-8x(的6次方)y³-64x(的6次方)y³
=-72x(的6次方)y³
上标实在打不出来,光这几个都搞了好久,望采纳!
(﹣2x²y)³+(8x²)²×(-x)²×(-y)³
=-8x6y3+64x4*x2*(-y3)
=-8x6y3-64x6y3
=-72x6y3