Question

check the weather both x = 2 /3 and x=-1/3 are roots of 9x^2 -3x-2= 0 or not.​

Answer 1

Step-by-step explanation:

for this put these values one by one...

for x=2/3

we have ,9×4/9-3×2/3-2

=4-4

=0

hence,x=2/3 is a root

now ,for x=-1/3

we have ,9×1/9-3×-1/3-2

=1-1=0

hence x=-1/3 is also a root of the eqn..