Question 369637
{{{(7 - 9t)(1 + 6t) =7*1+7*6t+(-9t)1+(-9t)(6t)}}}
{{{(7 - 9t)(1 + 6t) =7+42t-9t-54t^2}}}
{{{highlight((7 - 9t)(1 + 6t) =7+33t-54t^2)}}}