Chapter ---- Straight Lines. Please answer this question...!!!
Ananya , 5 Years ago
Grade 11
Analytical Geometry> Chapter ---- Straight Lines. Please answe...
1 Answers
Saurabh Koranglekar
Last Activity: 5 Years ago
Dear Student
Please factorize the terms
L1L2 = x^2 + 3xy-xy +ay^2
= (x(x+3y))-y((x-ay))
putting a =-3
= (x-y)(x+3y)
L1L3= ax^2 + 3xy-xy +y^2
= (y(3x+y))-x((y-ax))
putting a =-3
= -1*(x-y)(3x+y)
L2L3 = (x+3y)(3x+y)
= 3x^2 + 10xy + 3y^2
option B
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