将x与-2按照新规定的运算规则运算
可得:4+2(-2)x=8,
解之得:x=-1.
故填-1.
a※b是新规定的这样一种运算法则:a※b=a2+2ab,若(-2)※x=8,则x=_.
a※b是新规定的这样一种运算法则:a※b=a2+2ab,若(-2)※x=8,则x=______.
数学人气:654 ℃时间:2019-12-15 11:20:53
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