Let the abscissae of the two points \( P \) and \( Q \) on a circle be the roots of \( x^{2}-4 x... VIDEO
Let the abscissae of the two points \( P \) and \( Q \) on a circle be the roots of \( x^{2}-4 x-6=0 \) and the ordinates of \( P \) and \( Q \) be the roots of \( y^{2}+2 y-7=0 \). If \( P Q \) is a diameter of the circle \( x^{2}+y^{2}+2 a x+2 b y+c=0 \), then the value of \( (a+b-c) \) ishttps://bit.ly/YTAI_PWAP https://www.pw.live
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