1.已知y=2x,求(2x+y/x^2-2xy+y^2)乘以(x-y)的值.2.计算题:a-2b+(4b^2/a+2b)+(4a^2b/a^2-4b^2)
问题描述:
1.已知y=2x,求(2x+y/x^2-2xy+y^2)乘以(x-y)的值.2.计算题:a-2b+(4b^2/a+2b)+(4a^2b/a^2-4b^2)
答
1.已知y=2x,求(2x+y/x^2-2xy+y^2)乘以(x-y)的值.2.计算题:a-2b+(4b^2/a+2b)+(4a^2b/a^2-4b^2)