Question

if normal at p(18,12) to the parabola y^2=8x cuts it again at Q,show that 9PQ=80√10

answer,it and explain where I am wrong.......,..

jinko, writing nhi smjh AA rhi....clear image nhi LG RHA....kripya wo question pe click na krein......​

Answer 1

Answer:

Yay!!! Finally answer aagaya........tumhe problem isiliye aa rahi thi kyonki tumne cubic equation se m ki value nikali......aur usse m ki 3 possible values aa rahi thi i.e. -1,-2 & 3

Lekin is condition ke liye sirf m=3 parametric form ko satisfy kar raha tha......magar tune liya m=1

Another answer by a junior mathematician ;)