daijagattison
Factor this trinomial.
x2 + 3x  4



This Question is Closed

math456
Best Response
You've already chosen the best response.
2
\[x ^{2}+4xx+4\]

pratu043
Best Response
You've already chosen the best response.
2
= (x + 4)(x  1)

OCWNotreDame
Best Response
You've already chosen the best response.
1
Think of what 2 numbers multiply to (4) and add to (+3)

pratu043
Best Response
You've already chosen the best response.
2
That's right.

math456
Best Response
You've already chosen the best response.
2
\[x(x+4)1(x+4)\]
\[(x+4)(x1)\]

apoorvk
Best Response
You've already chosen the best response.
1
4 has factors 1,2,2.
now 1  2*2 can be written as '3'
so split the middle term '3x' as 'x  4x'  then take common and proceed.