The quadratic formula is 
So the solution for k is 16.
Hope that helps!
Answer:
Step-by-step explanation:
five ex square plus five ex plus five
Cos 0 and cos 180 are both = 1 and -1, respectively. The cosine of an angle is the ratio of the two sides of a triangle “adjacent/hypotenuse”. Whether the angle is 0 or 180, the adjacent side and the hypotenuse coincide and so both are of the same length so the ratio of adjacent to hypotenuse will be 1.0.
Sq. root of 405= approximately positive or negative 20.124611797498107267682563018581
Its irrational. This is as far as the calculator goes.
