m^2-n^2=9,
(m-n)(m+n)=9=-1*(-9)=(-3)*(-3)=(-1)*(-9)
m-n=-1
m+n=-9
m=-5
n=-4
m-n=-3
m+n=-3
n=0(舍去)
m-n=-9
m+n=-1
m=-5
n=4(舍去)
m=-5
n=-4
已知m,n為負(fù)整數(shù),且m^2-n^2=9,求m,n的值
已知m,n為負(fù)整數(shù),且m^2-n^2=9,求m,n的值
數(shù)學(xué)人氣：452 ℃時(shí)間：2020-06-03 21:47:09
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