若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
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若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7x
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
x(x*x-1)+x(5-x*x)-6y+7
=-x+5x-6y+7
=2(2x-3y)+7
=2*(-4)+7
=-8+7
=-1
答案是 -1
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
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