Which expresión is equivalent to 8x-2y+x+x

If a baseball player hits a baseball from 4 feet off the ground with an initial velocity of 64 feet per second, how long will it take the baseball to hit the ground? use the equation h = −16t2 + 64t + 4.

Simply 8x squared + 5(7x squared- x) - 2x =

Secant be and cf intersect at point d inside a what is the measure of cde