Answer:
r=
your question is incomplete
Not real.
Step-by-step explanation:
The root is not a real number . A negative has no real root.
the answer is 5
4x^2-22x+30
=2(2x^2 - 11x + 15)
=2(2x^2 -6x -5x +15)
= 2 { 2x(x-3) - 5(x-3) }
= 2 (x-3) (2x - 5)
