(4+x)(4-x) if necessary combine in like term

Find the missing factor. 7s2 + 25s + 12 = (s + 3)( ).

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?