Factor.

x2 – 4x + 4

A.
(x – 2)2

B.
(x + 4)2

C.
(x + 2)2

D.
(x – 4)2

Question

Factor. 
 
        x2 – 4x + 4
 
 
 A.
(x – 2)2
 
 B.
(x + 4)2
 
 C.
(x + 2)2
 
 D.
(x – 4)2

anonymous · Answer

All the 2s at the end are superscripts by the way

anonymous · Answer

@iGreen @triciaal help?

triciaal · Answer

the equation is in the form ax^2 +bx + c = 0
what are the factors of a*c that add up to b

triciaal · Answer

also pay attention to the signs

anonymous · Answer

Hmmm... I haven't heard the equation before... 0.0... I just don't get how to do this in the foggiest- can you think of another way to explain it

anonymous · Answer

I'm only in 8th grade

triciaal · Answer

a, b and c are real numbers  the coefficients

anonymous · Answer

Ok? So D would be the answer?

triciaal · Answer

NO  I was about to show you step by step how to get the answer for any equation.

anonymous · Answer

Ok, please do then :)

triciaal · Answer

have you done this yet    (a + b)^2 = a^2 +2ab + b^2?

triciaal · Answer

(a-b)^2 = a^2 -2ab + b^2

triciaal · Answer

you said you are in 8th

anonymous · Answer

Nope... ummm I can learn it though,so: the answer= x^2-4x+4

anonymous · Answer

I am in 8th grade

triciaal · Answer

back to this problem

anonymous · Answer

(x-4)^2?

triciaal · Answer

and how to get (x-2)^2

anonymous · Answer

Oh, would b=2 because √4 is 2?

triciaal · Answer

|dw:1430412353636:dw|
what is a*c?