SOLUTION: Which of the following polynomials can be factored as a difference of two squares? 16x2 + 1 9y2 - 1 x2 + 4x + 4 144a2 + 16 all of the above

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Question 58246: Which of the following polynomials can be factored as a difference of two squares?
16x2 + 1
9y2 - 1
x2 + 4x + 4
144a2 + 16
all of the above

Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
Which of the following polynomials can be factored as a difference of two squares?
:
16x2 + 1 sum not difference
9y%5E2-1 -,2 terms, 3y*3y=9y^2 and 1=1*1 We have a winner!!!
x2 + 4x + 4 3 terms not 2
144a2 + 16 sum not difference
all of the above speaks for itself
:
difference means subtraction, -.
two means there are two terms.
squares means that something times itself can make the term.
:
Our winner can be factored this way:
9y%5E2-1=%283y%2B1%29%283y-1%29
Happy Calculating!!!