Which of the following trinomials can be factored?
a. 3b2+4b+1
b.3b2+6b+14
c. 3b2+8b+1
d. 3b2+30b+2

Please show the work on how you got it factored.
Thank you

Question

Which of the following trinomials can be factored? 
a. 3b2+4b+1
b.3b2+6b+14
c. 3b2+8b+1
d. 3b2+30b+2

Please show the work on how you got it factored. 
Thank you

amistre64 · Answer

any of them can be run thru the quadratic formula; what defines a factoring?

amistre64 · Answer

3.2 = 6; and i cant see and factors of 6 that add up to 30

amistre64 · Answer

or 8

amistre64 · Answer

a looks good for it tho

amistre64 · Answer

and b maybe

anonymous · Answer

yeah a is correct but can u show me how u factor it. 
Thanks tips

amistre64 · Answer

3.1 = 3

3+1 = 4

(x+3)(x+1)

amistre64 · Answer

forgot to divide out the 3 again

amistre64 · Answer

(x+3/3)(x+1/3)

(x+1)(3x+1)

amistre64 · Answer

thats better

amistre64 · Answer

(x   /3)(x   /3)

3b2+6b+14

3(14) = 42  i dont think factors of 42 will add to get 6

amistre64 · Answer

5.1=5
4.2=8
3.3=9

none of which are 42

amistre64 · Answer

so i think a is the only factorable one

anonymous · Answer

so the answer would be 
(x+1)(3x+1) then?

amistre64 · Answer

yes, for "a"