4a^2-16a+16

Question

4a^2-16a+16

turingtest · Answer

let me guess... factor?

anonymous · Answer

yes

unklerhaukus · Answer

..out a four

anonymous · Answer

i can do foil but not backwards..  sorry

parthkohli · Answer

= 4a^2 - 8a - 8a + 16
= 4a(a - 2) - 8(a - 2)
= (4a - 8)(a - 2)

turingtest · Answer

@mark_o. Please do not post just the answer without explanation, that is not the goal of this site. Refer to the OS code of conduct if you are unclear on the rules here.

anonymous · Answer

this is what i got so far 4(a^2-4a+4)

unklerhaukus · Answer

ok good work,
now you just need two number who add to give -4 and multiply to give 4

anonymous · Answer

i know it 4 and 1 but i need a negative number and if get -1 it wont work

unklerhaukus · Answer

they might be the same number

anonymous · Answer

what number do i use?

unklerhaukus · Answer

(hint: the two numbers that multiply together give 4 and add to give -4
are actually the same number i this case

unklerhaukus · Answer

*in

anonymous · Answer

It's actually: 4(a-2)^2
Would you like an explanation?

anonymous · Answer

yes please

unklerhaukus · Answer

the numbers you were loking for were -2, and -2

anonymous · Answer

First you take out the 4. Then since it has two 16's you know it will turn out to be a similiar number. So basically it comes out too 4(a-2)^2.
I'm not very good at explaining this, sorry.

anonymous · Answer

so is it this 4(a-2)^2 ?

anonymous · Answer

I believe so.

unklerhaukus · Answer

the step that has not yet been written is$$4(a-2)(a-2)$$