Question

State the conditions under which the equation Lx2 + 2mxy +2px +2qy + r = 0 represents a pair o
lines
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Answer 1

Answer:

Step-by-step explanation:

ax^2 + by^2 + 2hxy + 2gx + 2fy + c = 0

it will represent a pair of straiht lines when

abc + 2fgh - af^2 - bg^2 - ch^2 = 0

compare it with your equation to get your required answer..

Answer 2

Answer:

hope it helps you

Step-by-step explanation:

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