若|m|=多,则m=______;若n 2 =36,则n=______,m+n=______
若|m|=多,则m=______;若n2=36,则n=______,m+n=______....
若|m|=多,则m=______;若n 2 =36,则n=______,m+n=______.
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若|m|=7,则m=±7; 若5 2 =36,则5=±6, 当m=7,5=6时,m+5=13, 当m=7,5=-6时,m+5=1, 当m=-7,5=6时,m+5=-1, 当m=-7,5=-6时,m+5=-13. 故答案是:±7;±6;±1或±13. |
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