Question

If a.ß be the zeros of the polynomial 2x² + 5x + k
such that a²+ ß²+aß = 21/4 then k?​

Answer 1

under Armour production

Answer 2

a.B= c/a put in the equation

a^2+B^2-(k/2)=21/4

(k/2)=21/4-(a^2+B^^2)

(k/2)=21/4-{(a+B)^2-2aB}

a+B= -b/a = -5/2

put the value and you will get the answer hope it will help you