Algebra (Does any one understand special factors)?
posted by Rae Rae .
I do not understand special factors, the teacher on Friday tried to explain in to me in class but she went so fast, and every time we complain that we don't understand it she gets mad. So could someone please help me with at least one problem so I can understand it better, and please explain it step by step.
Directions: Determine whether each trinomial is a perfect square trinomial. If so factor it.
1. x^216x+64

I think its a perfect square trionomial because you can square 4^2 to get 16 and 8^2 to get 64
(x  8)(x  8 ) 
first condition:
the first and last terms must be perfect squares, and they must both be positive
second condition:
the square root of the first term times the square root of the last term, then doubled, should be equal to the middle term.
e.g.
25x^2 + 60xy + 36y^2
square root of first: 5x
square root of last : 6y
product: 30xy
doubled: 60xy , so YES
e.g.
x^4  10x^2 + 25
square root of first: x^2
square root of last: 5
product : 5x^2
doubled : 10x^2, YES!
does that make sense?
Respond to this Question
Similar Questions

Dilution
What volume of H2O should be added to 500 ML of a 1.0 mol/L CuSO4 solution to dilute it to 0.5 mol/L? 
Math
I have more i don't understand?? Use the distributive property of multiplication over addition to rewrite the sum as a product of two factors, where one of the factors is a sum. 14) 6yz  54y A) 6y(z  9) B) 6y(z  54) C) 6y(z + 9) 
Business Computer Information Systems
In 3–5 sentences, discuss special considerations for using blogs and wikis in research. I don't understand this question good can you guys please help me understand what i am sopose to do. 
teacher aide
Public law 94142 mandates that A schools must transport students to special sites for education B only certain states must provide special education programs C parents may not participate in a special needs child's education D every … 
psychiatry
Can someone help me to understand physical factors, and psychosocial factors? 
Algebra
who ever will help me I do not understand this problem? 
Counting and Probability
We call a number special if every digit in the number either is a 1 or borders a 1. For example, 11111, 13, 141, 1441, 515151, and 101 are all special, but 10001, 222, 122, and 1333 are not special. How many 2digit numbers are special? 
Math
I don't understand how to do this, I would appreciate if someone could help explain. Two of the factors of ax^2+bx+c are (2x2) and (x+5). Which is one of xintercepts of y=ax^2+bx+c? 
Social Studies
Hi, I'm having a really hard time understanding this concept. I know the answers because my teacher told us them but I don't know why they are the answers. Could you explain them please? 
Science one question dont understand plz help ASAP
What will my instruments need to do? (You don’t have to have special names. If you know what kind of data you want to collect, you’ll know what the instruments need to do. Don’t forget that you may need to store samples or other