State the conditions under which the equation Lx2 + 2mxy +2px +2qy + r = 0 represents a pair o
lines
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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..
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hope it helps you
Step-by-step explanation:
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