rahul and sachin made a mistake
Sachin and Rahul attempted to solve a quadratic equation . Sachin made a mistake in writing down the constant term and ended up in roots (4,3) Rahul made a mistake in writing down coefficient of x to get roots (3,2). The correct roots of the equation are (p,q). What is p!+q!
NOTE : take the largest root as p
The answer is 721.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
Sachin got roots as (4,3) = (x-4)(x-3) = x^2 - 7x +12 ; here his constant term is wrong ; hence -7 is correct... and in rahul's case ; roots were (3,2) =(x-3)(x-2) =x^2 - 5x +6 ; here his constant term is right and -5 is wrong..... thus overall correct equation would be X^2 - 7x + 6 , roots for this equation are :- (x-6)(x-1) , x-6 =0 , x= 6 , x-1=0, x= 1 hence P = 6, Q= 1 now, P! + Q! = 6! + 1! =720 +1=721