Sure the key is the b term +5. Your job is to separate the factors of 33 in such a way that 2 times one factor yields a difference of 5 whan the "i" & "o" terms are added together. Sooo, 3+11 seem to do the trick
for the primary one i could distribute the whole lot out and get n^two+sixteen n+sixty three which elements to (n+7)(n+nine) for the moment i could aspect through grouping (y^three-y^two) + (3y-three) and aspect each and every of the ones y^two(y-a million)+three(y-a million) and those mix to (y^two-three)(y-a million)
What I do is:
- Make a big 'X'
- On the top, write '-66' [co-efficient of 'x^2' multiplied by the last number]
- On the bottom, write '5' [co-efficient of 'x']
- Now... Find two numbers that multiply to -66 and add to 5