Question

Find value of k
X^2-3kx+2k^2-1

Answer 1

from quadratic equation :

a=1 , b= -3k, c = 2k^2-1

product of zeros = c/a

c/a = 7

2k^2 - 1/1 = 7

2k^2- 1 = 7

2k^2 = 8. ( 7+1=8 )

k^2 = 4

k = -+2

here is your required value of k.

Answer 2

thanks for the free ke points !!!

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