Question

if x=-3 and x= 2/3 are solutions of quadratic equation mx²+7x+n=0,find the values of m&n.​

Answer 1

Answer:

here's ur answer:

first,

$mx^{2} + 7x+ n = 0$

Put x=-3 in given equation..

$m-3^{2} + 7(-3) + n=0$

=>  9m +n =21------------------(1)

Put x= 2/3 in given equation

4m + 9n =0

Now solve

m= 3

n= -6

hope it works..

Step-by-step explanation: