已知b-(1/2)a²=0,化简:(3ab+3b)/(a²+b)

问题描述:

已知b-(1/2)a²=0,化简:(3ab+3b)/(a²+b)

∵b-(1/2)a²=0
∴a²=2b
(3ab+3b)/(a²+b)
=3b(a+1)/(2b+b)
=a+1