已知2a+1的算术平方根是0,b-a的算术平方根是2分之1,那么2a+1=0b-a=(1/2)²解得:a=-1/2b=-1/42分之1ab=1/2×(-1/2)×(-1/4)=1/16它的算术平方根是:1/4
已知2a+1的算术平方根是0,b-a的算术平方根是2分之1,那么2a+1=0b-a=(1/2)²解得:a=-1/2b=-1/42分之1ab=1/2×(-1/2)×(-1/4)=1/16它的算术平方根是:1/4
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