2a(square)b+2ab(square)=2ab(a+b)=2*12*7=168
或者a=3 b=4 或a=4 b=3都能快速算出来
given that a+b=7 and ab=12,find the value of 2a(square)b+2ab(square)
given that a+b=7 and ab=12,find the value of 2a(square)b+2ab(square)
其他人气：829 ℃时间：2020-03-21 06:41:44
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