已知(x²+4y²)-16x²y²=0且x≠2y,试用含x的代数式表示y
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 12:51:08
![已知(x²+4y²)-16x²y²=0且x≠2y,试用含x的代数式表示y](/uploads/image/z/3836471-23-1.jpg?t=%E5%B7%B2%E7%9F%A5%28x%26%23178%3B%2B4y%26%23178%3B%29-16x%26%23178%3By%26%23178%3B%3D0%E4%B8%94x%E2%89%A02y%2C%E8%AF%95%E7%94%A8%E5%90%ABx%E7%9A%84%E4%BB%A3%E6%95%B0%E5%BC%8F%E8%A1%A8%E7%A4%BAy)
x){}K5*Ԕ
-M*!M]C3TɎ):UX?O'x>Ϧnxϗ쪴I*ҧv64s1̈́PXLkPmRQ!k6QgCA"@C8:^
(eVV$ف (
已知(x²+4y²)-16x²y²=0且x≠2y,试用含x的代数式表示y
已知(x²+4y²)-16x²y²=0且x≠2y,试用含x的代数式表示y
已知(x²+4y²)-16x²y²=0且x≠2y,试用含x的代数式表示y
是(x²+4y²)²-16x²y²=0
(x²+4y²+4xy)(x²+4y²-4xy)=0
(x+2y)²(x-2y)²=0
x-2y≠0
所以(x+2y)²=0
x+2y=0
y=-x/2