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

Question 313069: Which of the following polynomials can be factored as a difference of two squares?
A) 16x2 + 1
B) 9y2 - 1
C) x2 + 4x + 4
D) 144a2 + 16
E) all of the above
Answer by CharlesG2(834) (Show Source): You can put this solution on YOUR website!
Which of the following polynomials can be factored as a difference of two squares?
A) 16x2 + 1
B) 9y2 - 1
C) x2 + 4x + 4
D) 144a2 + 16
E) all of the above
a difference of 2 squares would be (ax+b)(ax-b) or (a^2)(x^2) - b^2, the +bax and the -bax cancel out
A) no,
B) yes, (3y + 1)(3y - 1) = 9y^2 - 1
C) no
D) no
E) no

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