If 𝑎𝑥2 + 2ℎ𝑥𝑦 + 𝑏𝑦2 + 2𝑔𝑥 + 2𝑓𝑦 + 𝑐 = 0 represent a pair of straight lines,the area of the triangle formed by their bisector and the axis of x is √{(𝑎−𝑏)2+4ℎ2}2ℎ.(𝑐𝑎−𝑔2/𝑎𝑏−ℎ2)
solve
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