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2. Express each equation in standard form and give the coordinates of the centre, or, in the case of the parabola, the vertex. a) 9x2 + y2 + 36x = 9 b) x2 + y2 - 2x + 4y = 5 c) 9x2 - 4y - 8y + 32 = 0 d) 3x2 + 12x - 4y - 12 = 0 e) 9x2 - 4y2 180x - 56y + 74

匿名用户 最后更新于 2021-12-01 19:17 数学类Mathematics

2. Express each equation in standard form and give the coordinates of the centre, or, in the case of the parabola, the vertex. a) 9x2 + y2 + 36x = 9 b) x2 + y2 - 2x + 4y = 5 c) 9x2 - 4y - 8y + 32 = 0 d) 3x2 + 12x - 4y - 12 = 0 e) 9x2 - 4y2 180x - 56y + 740 = 0

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