a[y-b/(2a)]^2+b[y-b/(2a)]+c=0怎么化简成a[y-b/(2a)]^2=ay^2-by+b^2/4a

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a[y-b/(2a)]^2+b[y-b/(2a)]+c=0怎么化简成a[y-b/(2a)]^2=ay^2-by+b^2/4aa[y-b/(2a)]^2+b[y-b/(2a)]+c=0怎么化简成a[y-

a[y-b/(2a)]^2+b[y-b/(2a)]+c=0怎么化简成a[y-b/(2a)]^2=ay^2-by+b^2/4a
a[y-b/(2a)]^2+b[y-b/(2a)]+c=0怎么化简成a[y-b/(2a)]^2=ay^2-by+b^2/4a

a[y-b/(2a)]^2+b[y-b/(2a)]+c=0怎么化简成a[y-b/(2a)]^2=ay^2-by+b^2/4a
用乘法公式(a-b)^2=a^2-2ab+b^2展开即可
a[y-b/(2a)]^2=a[y^2-2yb/2a+b^2/4a^2]=ay^2-by+b^2/4a

怎么没有C了