WILL MEDAL!!
What are the factored forms of the following expressions?
3. 12d^2+4d-1
a. (6d+1)(2d+1)
b. (6d-1)(2d-1)
c. (6d-1)(2d+1)
d. (6d+1)(2d-1)

Question

WILL MEDAL!!
What are the factored forms of the following expressions?
3. 12d^2+4d-1
a. (6d+1)(2d+1)
b. (6d-1)(2d-1)
c. (6d-1)(2d+1)
d. (6d+1)(2d-1)

campbell_st · Answer

well the last term is -1 so the 2 factors need to have 1 positive and 1 negative to achieve that result... 

then to get 4d as the middle term you need the larger factor of 12d^2 to be multiplied by 1

anonymous · Answer

C? @campbell_st

campbell_st · Answer

looks good to me

anonymous · Answer

Was the last one you helped with c as well? @campbell_st

campbell_st · Answer

well you can expand it with FOIL to check