3. Which of the following is NOT a perfect square trinomial? a. x2 + 12x + 36
c. x2 + 16x + 64
b. x2 + 17x + 72
d. x2 + 18x + 81
4. Complete the expression: r2 + 8r + given the factors
((r + 4) and (r + 4).
a.0
b. 4
c.8
d. 16
5. Which of the following shows Commutative Property of Addition?
a. u + p = p + u
c. m( x+y) = mx+my
b. e+ 0=e
d. s + (-s) = 0
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