I need help with. What is the simplified form of the polynomial expression shown?

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

Solve the system of equations. y= 2x y= x^2 - 15

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3