Sir, in your episode introduction to quad. eqns., you solved a question related to marbles.The question was to find the no. of marbles aditya and abhay had to start with, shouldn't the answer have just been x=18,22 (22+18=40) instead of solving it further (12,16)?

Asked by somyap | 3rd Dec, 2010, 12:00: AM

Expert Answer:

Dear Student
In this question on marbles in the episode on Introduction to quadratic equations
we have left the question by forming the equation since in the I episode we are not going in solving the equation
But Solving the equation x2-40x+396 =0 we get x =18 or 22
Further solving to get the present number of marbles helps us to cross check the answer
1as 12 x 16 =192 which is thew product of marbles they have
Hope it clears your doubt
Regards'
Team Topper

Answered by  | 6th Dec, 2010, 10:25: AM

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