4(x²-y)(x²+y)-(2x²-y)²,其中x=2,y=-5.这是因式分解的化简求值要过程速度.
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![4(x²-y)(x²+y)-(2x²-y)²,其中x=2,y=-5.这是因式分解的化简求值要过程速度.](/uploads/image/z/1246890-66-0.jpg?t=4%28x%26%23178%3B-y%29%28x%26%23178%3B%2By%29-%282x%26%23178%3B-y%29%26%23178%3B%2C%E5%85%B6%E4%B8%ADx%3D2%2Cy%3D-5.%E8%BF%99%E6%98%AF%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E7%9A%84%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%E8%A6%81%E8%BF%87%E7%A8%8B%E9%80%9F%E5%BA%A6.)
4(x²-y)(x²+y)-(2x²-y)²,其中x=2,y=-5.这是因式分解的化简求值要过程速度.
4(x²-y)(x²+y)-(2x²-y)²,其中x=2,y=-5.这是因式分解的化简求值要过程速度.
4(x²-y)(x²+y)-(2x²-y)²,其中x=2,y=-5.这是因式分解的化简求值要过程速度.
4(x²-y)(x²+y)-(2x²-y)²
=4x^4-4y^2-4x^4+4x^2y-y^2
=4x^2y-5y^2
=y(4x^2-5y)
=-5(4*2*2-5*(-5))
=-5(16+25)
=-80-125
=-205