(-2a²)的三次方×(-a)²÷(-4a四次方)²
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(-2a²)的三次方×(-a)²÷(-4a四次方)²
(-2a²)的三次方×(-a)²÷(-4a四次方)²
(-2a²)的三次方×(-a)²÷(-4a四次方)²
(-2a²)的三次方×(-a)²÷(-4a四次方)²
=-8a的6次方×a的2次方÷16a的8次方
=(-8÷16)a的6+2-8次方
=-1/2a的0次方
=-1/2