Question

What is the factored form of the expression?

3x2 + 8x – 16
A. (3x + 4)(x – 4)
B. (3x + 4)(x + 4)
C. (3x – 4)(x – 4)
D. (3x – 4)(x + 4)

Answer 1

If you do give me the answer i would like help on how you got the answer so i'll know for similar problems

Answer 2

what is to numbers that will give you negative 16

Answer 3

8 & -2

Answer 4

wow i am lost

Answer 5

do you know FOIL

Answer 6

not that great

Answer 7

4 and -4 would give you -16 right

Answer 8

One of the advantages of multiple choice, is that you can look at the choices and in this case, it is most obvious to the casual observer that the two numbers are +4 and -4.

Answer 9

yes it does give you -16

Answer 10

okay so now how can you get rid of 3x^2 just look at your choices

Answer 11

i got D

Answer 12

You know that the two blanks are going to have a 1 and a 3.......
All you have to do is to figure out which one goes where so that the sum of the x terms is a +8.