计算 (-2x²+½)(-2x²-½)(x+y+z)²(2a-3b-1)(1+3b-2a)
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计算 (-2x²+½)(-2x²-½)(x+y+z)²(2a-3b-1)(1+3b-2a)
计算 (-2x²+½)(-2x²-½)
(x+y+z)²
(2a-3b-1)(1+3b-2a)
计算 (-2x²+½)(-2x²-½)(x+y+z)²(2a-3b-1)(1+3b-2a)
原式=(-2x²)²-(1/2)²
=4x^4-1/4
原式=[(x+y)+z]²
=(x+y)²+2(x+y)z+z²
=x²+2xy+y²+2xz+2yz+z²
原式=-[(2a-3b)-1]²
=-(2a-3b)²+2(2a-3b)-1
=-4a²+12ab-9b²+4a-6b-1
你这是什么