2a+b=-8
3a=b+2
a=-1.2,b=-5.6
已知點P(2a+b,-3a)與點P’(8,b+2) 則點P與點P'關于原點對稱,則a=()b=()
已知點P(2a+b,-3a)與點P’(8,b+2) 則點P與點P'關于原點對稱,則a=()b=()
其他人氣:111 ℃時間:2020-04-02 01:00:50
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