12k-1 is the simplified answer
Discriminant = square root (b^2 -4*a*c)
square root (64 -4*1*12) =
square root (16) =
4
Therefore it has 2 rational soltions
Answer:
9 x + 42.
Step-by-step explanation:
Π/6+2πk
5π/6+2πk
you need to factor and use trig identities
