Calculate the frequency of light with wavelength = 2.50 x 10⁻⁷m

Which expression is equivalent to 4 square root 6 divided by 3 root 2

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Aline that intersects one of two parallel lines intersects the other also always sometimes never