How Long to Accelerate for Desired Time?

[pointintime]

I don't know how to get this mess into standard form...

-2^-1 t3^2 - 180 s (t3) + t3^2 = a^-1 (Vo (180 s) - 1100 m + Xo)

 

[pointintime]

I have to get it into

y = ax^2 + bx + c

don't know how

 

[pointintime]

rewrote for zero don't know what to do

-2^-1 t3^2 - 180 s (t3) + t3^2 = a^-1 (Vo (180 s) - 1100 m + Xo)
(Vo (180 s) - 1100 m + Xo)^-1 a(-2^-1 t3^2 - 180 s (t3) + t3^2) = 0

:O