(-1/2*xy)*(4x-2xy的三次方+1)计算
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(-1/2*xy)*(4x-2xy的三次方+1)计算
(-1/2*xy)*(4x-2xy的三次方+1)计算
(-1/2*xy)*(4x-2xy的三次方+1)计算
(-1/2*xy)*(4x-2xy³+1)
= (-1/2*xy)*4x-(-1/2*xy)*2xy³+(-1/2*xy)*1
=-2x²y+x²y⁴-xy/2
(- 1 / 2)x y · ( 4 x - 2 x y ³ + 1)
= (- 1 / 2)x y · 4 x + (1 / 2 × 2)x y · x y ³ + (- 1 / 2)x y
= - 2 x ² y + x ² y ^ 4 - (1 / 2)x y