book Maths Puzzle Numerical Ability

4x(squared) - 17x + 4 = 0

Solved by completing the square. Not sure what to do with the coefficient 4

Read Solution (Total 0)

book Other Question

Walt and Gail left a stable for a ride to a mountain lookout. On the way up, they averaged 3 mi/h. On the way back along the same trail, they averaged 5 1/4 mi/h, and the return tr ok i need to know what does all them letters mean cause i don't get it