If a, b, c are non-zero real numbers such that 3(Σa2+1)=2(Σa+Σab), then a, b, c are in
If a, b, c are non-zero real numbers such that 3(Σa2+1)=2(Σa+Σab), then a, b, c are in
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Point E is the midpoint of the side BC of triangle ABC and F is the midpoint of AE. The line thru BF intersects AC at D. Find the area of triangle AFD if the area of the triangle is 48 cm2.
DE||BC and the ratio of the areas of ∆ADE and trapezium DBCE is 4:5 find ratio of DE:BC.