Factor completely. Remember to look first for a common factor and to check by multiplying. If a polynomial is prime, state this.

5d2+40d+80

Question

Factor completely. Remember to look first for a common factor and to check by multiplying. If a polynomial is prime, state this.

5d2+40d+80

misty1212 · Answer

HI!!

misty1212 · Answer

factor the 5 out first, start with 
$$5(d^2+8d+16)$$

misty1212 · Answer

you should recognize the second part as a perfect square

anonymous · Answer

no...the second part is wht I need help with...I don't know where to start after 5d(d + 8d +16)

anonymous · Answer

hey misty to understand this probelem more i am going to do a message thing because i want to see if i am able to answer the rest of this problem the way that you would i was actually trying to help @dontre  a minute or so ago as well.

anonymous · Answer

would it b (d+4) (d+4)?

anonymous · Answer

5(d+4)(d+4) As I remember. You have to keep the 5

anonymous · Answer

but if you do the foil method...the answer would be wrong

anonymous · Answer

You don't need to foil

nnesha · Answer

need help ??

anonymous · Answer

what am I doing wrong @Nnesha/

nnesha · Answer

nothing that is right answer :-)

anonymous · Answer

5(d+4)(d+4)?

nnesha · Answer

yes right 
GCF is 5 then you get $$\rm d^2 + 8d + 16$$
because is one so you can easily factor it
two number if you multiply them you should get 16 so 4 times 4 = 16
and if you add or subtract them you should get 8 so 4 +4 = 8 
yep right