Question

Show that the points P(a,b+c), Q(b,c+a)and R(c,a+b) are collinear

Answer 1

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Answer 2

Answer:

Step-by-step explanation:

Let these points be collinear .

a(c+a-a-b) + b(a+b-b-c) +c(b+c-c-a) =0

ac -ab +ab-bc+bc-ac=0

0=0

LHS=RHS

These points are collinear .

Our supposition is correct .

Hence Proved