(4x-2y+z)(5x-55y+z) pleaase help me
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(4x-2y+z)(5x-55y+z)
=20x^2-220xy+4xz-10xy+110y^2-2yz+5zx-55yz+z^2
=20x^2-230xy+z^2+9xz+110y^2-57yz.....Ans
=20x^2-220xy+4xz-10xy+110y^2-2yz+5zx-55yz+z^2
=20x^2-230xy+z^2+9xz+110y^2-57yz.....Ans
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