已知|X-2|+2(y-3) =0则3X+2Y-4X-7Y的值是多少?
问题描述:
已知|X-2|+2(y-3) =0则3X+2Y-4X-7Y的值是多少?
急用!
答
|X-2| + 2(Y-3) = 0;
=> X = 2,Y = 3;
所以为-17