已知y=(x^2+6x+9)/(x^2-9)÷(x+3)/(x^2-3x)-x+3.试说明不论x为任何有意义的值,y的值均不变
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![已知y=(x^2+6x+9)/(x^2-9)÷(x+3)/(x^2-3x)-x+3.试说明不论x为任何有意义的值,y的值均不变](/uploads/image/z/14981811-51-1.jpg?t=%E5%B7%B2%E7%9F%A5y%3D%28x%5E2%2B6x%2B9%29%2F%28x%5E2-9%29%C3%B7%28x%2B3%29%2F%28x%5E2-3x%29-x%2B3.%E8%AF%95%E8%AF%B4%E6%98%8E%E4%B8%8D%E8%AE%BAx%E4%B8%BA%E4%BB%BB%E4%BD%95%E6%9C%89%E6%84%8F%E4%B9%89%E7%9A%84%E5%80%BC%2Cy%E7%9A%84%E5%80%BC%E5%9D%87%E4%B8%8D%E5%8F%98)
已知y=(x^2+6x+9)/(x^2-9)÷(x+3)/(x^2-3x)-x+3.试说明不论x为任何有意义的值,y的值均不变
已知y=(x^2+6x+9)/(x^2-9)÷(x+3)/(x^2-3x)-x+3.试说明不论x为任何有意义的值,y的值均不变
已知y=(x^2+6x+9)/(x^2-9)÷(x+3)/(x^2-3x)-x+3.试说明不论x为任何有意义的值,y的值均不变