已知(3-y-4x)²+(4x+y-3)=0,求实数x,y的值?
问题描述:
已知(3-y-4x)²+(4x+y-3)=0,求实数x,y的值?
答
(3-y-4x)²+(4x+y-3)=0
[-1*(4x+y-3)]²+(4x+y-3)=0
(4x+y-3)²+(4x+y-3)=0
(4x+y-3)(4x+y-3+1)=0
(4x+y-3)(4x+y-2)=0
那么:4x+y=3,或者4x+y=2
根据题意也只能得到上面的结论,没有办法得到x和y的具体值.