即(2a+3)的平方+根號b+2=0
所以2a+3=b+2=0
a=-3/2,b=-2
所以a+b=-3/2-2=-7/2
若(2a+3)的平方和根號b+2互為相反數(shù),求a加b的值,
若(2a+3)的平方和根號b+2互為相反數(shù),求a加b的值,
其他人氣:220 ℃時間:2020-02-05 23:40:47
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