1.

If A(5,3),B(11,-5) and (P(12,y) are the vertices of a right triangle angled at P ,then y =

Answer»

On SOLVING this equation
2y²-4y-16=0
y²-2y-8=0
(y²+2y)-(4y-8)=0
y(y+2)-4(y+2)=0
(y-4)(y+2)=0
y= 4 or y= - 2


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