I am unsure how to tackle making $t$ the subject of this formula
$D = ut + kt^2$
Because it appears twice and is squared, does this mean I have to factorise quadratically? I have tried but how is this possible when you only have algebra coefficients? Also surely if it was factorised into 2 brackets then you still wouldn't be able to single out the subject onto one side, so I guess you would have to factorise it into one bracket?
Please can someone make sense of this for me, explaining simply? Thankyou