It is said that the drug c____a powerful function has much effect on human beings.
已知方程(2m﹣4)xm+3+(n+3)y|n|﹣2=6是关于x,y的二元一次方程,试求m,n的值.
在平面直角坐标系xOy中,抛物线y=ax2+bx+2过B(﹣2,6),C(2,2)两点.