Question 592008
You need to apply this general rule:
{{{ ( a + b )*( c + d ) = a*c + a*d + b*c + b*d  }}}
applying this:
{{{ (7p - 6) * (6p + 5) = 42p^2 + 35p - 36p - 30 }}}
{{{ 42p^2 - p - 30 }}}