Prove that the roots of x squared+(1 - k) x + k - 3 = are real for all real values of K​

Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s

What is the vertex form of f(x) = x2 + 6x + 3

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches