Question

FACTOR X^2 + 6x + 8 = 0

Answer 1

4 + 2 = 6
4 x 2 = 8
so maybe the factors are ....?

Answer 2

those arent the factors @mebs ?

Answer 3

They are but how do you write it?

Answer 4

I dont know

Answer 5

lets see I'll say the answer and you try this one

ANS: (x+4)(x+2)

try: x^2 + 4x + 4

Answer 6

Find two numbers that add to 4 and multiply to 4.

Answer 7

x^2 +6x +8=0
=x +4
x +2
=(x+4)(x+2)=0

Answer 8

is it...isn't it?

Answer 9

When you're factorising this you're basically looking for two brackets thats when you multiply them out get the expression above. Because you've got an x^2 you know at some stage you have to multiply x by x. So you know you're brackets will look something like (x+....)(x+....)

Now to find the ..... values.
You need two numbers that add up +6 and multiply to get +8 (if you multiply the brackets back out once we have a solution the reasons for this should become clear.

So the only two numbers that satisfy those conditions are +4 and +2 (i.e. +2+6 = +8 and (+2)(+4)= +8)

so x^2 + 6x + 8 = (x+4)(x+2)

hope this helps!