Question

7. If the product of the roots of the equation x²-3x + k = 10 is -2 then the
value of k is
(a) -2
(b) -8
(c) 8
(d) 12
of the roots of the equation​

Answer 1

Answer:

C

Step-by-step explanation:

x²-3x + k - 10= 0

here a= 1 b= -3 c= k -10

product of roots= c/a

also product of roots= -2

therefore, -2 = c/a

-2 = (k - 10)/1

-2 + 10 = k

k= 8