一元二次方程的整数解3x^2-xy-2y^2+4x+y-5=03x^2+2y^2=98x^2-xy+y^2=x+ya^2b^2+a^2+b^2+1=4ab3x^2-8xy+7y^2-4x+2y=109重新写一遍：1）3x^2-xy-2y^2+4x+y-5=02）3x^2+2y^2=983）x^2-xy+y^2=x+y4）a^2b^2+a^2+b^2+1=4ab5）3x^2-8xy+7y^2-4x+2y=109