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Let P Q R be a right-angled isosceles t...

Let `P Q R` be a right-angled isosceles triangle, right angled at `P(2,1)dot` If the equation of the line `Q R` is `2x+y=3` , then the equation representing the pair of lines `P Q` and `P R` is (a) `3x^2-3y^2+8x y+20 x+10 y+25=0` (b) `3x^2-3y^2+8x y-20 x-10 y+25=0` (c) `3x^2-3y^2+8x y+10 x+15 y+20=0` (d) `3x^2-3y^2-8x y-15 y-20=0`

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Let P Q R be a right-angled isosceles triangle, right angled at P(2,1)dot If the equation of the line Q R is 2x+y=3 , then the equation representing the pair of lines P Q and P R is 3x^2-3y^2+8x y+20 x+10 y+25=0 3x^2-3y^2+8x y-20 x-10 y+25=0 3x^2-3y^2+8x y+10 x+15 y+20=0 3x^2-3y^2-8x y-15 y-20=0

x^(2) -8x + 15=0, y^(2)-3y +2=0

If the pairs of lines x^2+2x y+a y^2=0 and a x^2+2x y+y^2=0 have exactly one line in common, then the joint equation of the other two lines is given by (a) 3x^2+8x y-3y^2=0 (b) 3x^2+10 x y+3y^2=0 (c) y^2+2x y-3x^2=0 (d) x^2+2x y-3y^2=0

If the pairs of lines x^2+2x y+a y^2=0 and a x^2+2x y+y^2=0 have exactly one line in common, then the joint equation of the other two lines is given by (a) 3x^2+8x y-3y^2=0 (b) 3x^2+10 x y+3y^2=0 (c) y^2+2x y-3x^2=0 (d) x^2+2x y-3y^2=0

A straight line through P(-2,-3) cuts the pair of straight lines x^(2)+3y^(2)+4xy-8x-6y-9=0 in Q and R Find the equation of the line if PQ.PR=20

If the pairs of lines x^2+2x y+a y^2=0 and a x^2+2x y+y^2=0 have exactly one line in common, then the joint equation of the other two lines is given by (1) 3x^2+8x y-3y^2=0 (2) 3x^2+10 x y+3y^2=0 (3) y^2+2x y-3x^2=0 (4) x^2+2x y-3y^2=0

If the pairs of lines x^2+2x y+a y^2=0 and a x^2+2x y+y^2=0 have exactly one line in common, then the joint equation of the other two lines is given by a. 3x^2+8x y-3y^2=0 b. 3x^2+10 x y+3y^2=0 c. y^2+2x y-3x^2=0 d. x^2+2x y-3y^2=0

If the pairs of lines x^2+2x y+a y^2=0 and a x^2+2x y+y^2=0 have exactly one line in common, then the joint equation of the other two lines is given by 3x^2+8x y-3y^2=0 3x^2+10 x y+3y^2=0 y^2+2x y-3x^2=0 x^2+2x y-3y^2=0

The equation to the locus of a point P for which the distance from P to (0,5) is double the distance from P to y -axis is 1) 3x^(2)+y^(2)+10y-25=0 2) 3x^(2)-y^(2)+10y+25=0 3) 3x^(2)-y^(2)+10y-25=0 4) 3x^(2)+y^(2)-10y-25=0

From a point R(5,8) , two tangents R Pa n dR Q are drawn to a given circle S=0 whose radius is 5. If the circumcenter of triangle P Q R is (2, 3), then the equation of the circle S=0 is (a) x^2+y^2+2x+4y-20=0 (b) x^2+y^2+x+2y-10=0 (c) x^2+y^2-x+2y-20=0 (d ) x^2+y^2+4x-6y-12=0