 Hi and welcome to the session, let us discuss the following question, question says what should be the value of A if the value of 2x square plus x minus A equals to 5 when x is equal to 0. Let us now start with the solution. First of all we will find out value of the given algebraic expression at x is equal to 0 so we can write substituting x is equal to 0 in 2x square plus x minus A we get 2x square plus x minus A is equal to 2 multiplied by square of 0 plus 0 minus A. We know this is the given algebraic expression and this is the given numerical value of x so to find the value of this algebraic expression at x is equal to 0 we will substitute 0 for x in this expression and we get this expression clearly we can see here we have written 0 for x in this expression now 2 multiplied by square of 0 is 0 only we know 0 square is 0 and 2 multiplied by 0 is 0 now we will write plus 0 as it is and here we will write minus A now 0 plus 0 is 0 and 0 minus A is equal to minus A only so we get value of 2x square plus x minus A is equal to minus A when x is equal to 0 we are also given that value of 2x square minus A is equal to 5 when x is equal to 0 so from these 2 statements we get minus A is equal to 5 now multiplying both the sides by minus 1 we get A is equal to minus 5 so required value of A is equal to minus 5 this is our required answer this completes the session hope you understood the solution take care and have a nice day.