Difference of Squares
s
2
−
16
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Perfect Square Trinomials Difference of Squares Neither
x2−14x+49
x
2
−
14
x
+
49
9q2+12q+4
9
q
2
+
12
q
+
4
x2+16x+8
x
2
+
16
x
+
8
t2−25
t
2
−
25
25x2−36
25
x
2
−
36
x2+6x+9
x
2
+
6
x
+
9
h2−2
h
2
−
2
s2−16
s
2
−
16
Neither
s
2
−
16
Perfect Square Trinomials
(s^2 - 16) can be factored as (s + 4)(s - 4), which doesn't fit the definition of a perfect square trinomial.
Difference of Squares
(s^2 - 16) can be rewritten as (s^2 - 4^2), which is a difference of squares and can be factored as (s + 4)(s - 4).
Based on the correct factorization, the expression s^2 - 16 belongs in the "Difference of Squares" column.