Can someone help with this

y2+4x2-3y2-2x

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

The sum of two numbers is 86, and their difference is 20. find the two numbers

For what values of x is x2 + 2x = 24 true?