Grade 10 - Factoring Simple Trinomials

Find two numbers that multiply together to give you the last term and add together to give you the middle term.
If the last term is '+' then the two factors have matching signs, otherwise they do not match.
If the two brackets do not match then the final desired sign goes with the larger number.
Check teachers' note
Pg. 235 #2a,6,7acegik,8,11