How do you solve this? I am completely lost
Solve by completing the square:
5x² –10x +2=0

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?